644219680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:259

約数の個数: 192

約数和(自身を含む): 1725954048

約数和(自身を除く): 1081734368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 97, 103, 104, 124, 130, 155, 160, 194, 206, 208, 248, 260, 310, 388, 403, 412, 416, 485, 496, 515, 520, 620, 776, 806, 824, 970, 992, 1030, 1040, 1240, 1261, 1339, 1552, 1612, 1648, 1940, 2015, 2060, 2080, 2480, 2522, 2678, 3007, 3104, 3193, 3224, 3296, 3880, 4030, 4120, 4960, 5044, 5356, 6014, 6305, 6386, 6448, 6695, 7760, 8060, 8240, 9991, 10088, 10712, 12028, 12610, 12772, 12896, 13390, 15035, 15520, 15965, 16120, 16480, 19982, 20176, 21424, 24056, 25220, 25544, 26780, 30070, 31930, 32240, 39091, 39964, 40352, 41509, 42848, 48112, 49955, 50440, 51088, 53560, 60140, 63860, 64480, 78182, 79928, 83018, 96224, 99910, 100880, 102176, 107120, 120280, 127720, 129883, 156364, 159856, 166036, 195455, 199820, 201760, 207545, 214240, 240560, 255440, 259766, 309721, 312728, 319712, 332072, 390910, 399640, 415090, 481120, 510880, 519532, 619442, 625456, 649415, 664144, 781820, 799280, 830180, 1039064, 1238884, 1250912, 1298830, 1328288, 1548605, 1563640, 1598560, 1660360, 2078128, 2477768, 2597660, 3097210, 3127280, 3320720, 4026373, 4156256, 4955536, 5195320, 6194420, 6254560, 6641440, 8052746, 9911072, 10390640, 12388840, 16105492, 20131865, 20781280, 24777680, 32210984, 40263730, 49555360, 64421968, 80527460, 128843936, 161054920, 322109840, 644219680]

約数ペア:

[(1, 644219680), (2, 322109840), (4, 161054920), (5, 128843936), (8, 80527460), (10, 64421968), (13, 49555360), (16, 40263730), (20, 32210984), (26, 24777680), (31, 20781280), (32, 20131865), (40, 16105492), (52, 12388840), (62, 10390640), (65, 9911072), (80, 8052746), (97, 6641440), (103, 6254560), (104, 6194420), (124, 5195320), (130, 4955536), (155, 4156256), (160, 4026373), (194, 3320720), (206, 3127280), (208, 3097210), (248, 2597660), (260, 2477768), (310, 2078128), (388, 1660360), (403, 1598560), (412, 1563640), (416, 1548605), (485, 1328288), (496, 1298830), (515, 1250912), (520, 1238884), (620, 1039064), (776, 830180), (806, 799280), (824, 781820), (970, 664144), (992, 649415), (1030, 625456), (1040, 619442), (1240, 519532), (1261, 510880), (1339, 481120), (1552, 415090), (1612, 399640), (1648, 390910), (1940, 332072), (2015, 319712), (2060, 312728), (2080, 309721), (2480, 259766), (2522, 255440), (2678, 240560), (3007, 214240), (3104, 207545), (3193, 201760), (3224, 199820), (3296, 195455), (3880, 166036), (4030, 159856), (4120, 156364), (4960, 129883), (5044, 127720), (5356, 120280), (6014, 107120), (6305, 102176), (6386, 100880), (6448, 99910), (6695, 96224), (7760, 83018), (8060, 79928), (8240, 78182), (9991, 64480), (10088, 63860), (10712, 60140), (12028, 53560), (12610, 51088), (12772, 50440), (12896, 49955), (13390, 48112), (15035, 42848), (15520, 41509), (15965, 40352), (16120, 39964), (16480, 39091), (19982, 32240), (20176, 31930), (21424, 30070), (24056, 26780), (25220, 25544)]