80446240

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{331}}^1$

素因数の和:391

約数の個数: 144

約数和(自身を含む): 228904704

約数和(自身を除く): 148458464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 310, 331, 392, 434, 490, 496, 560, 620, 662, 784, 868, 980, 992, 1085, 1120, 1240, 1324, 1519, 1568, 1655, 1736, 1960, 2170, 2317, 2480, 2648, 3038, 3310, 3472, 3920, 4340, 4634, 4960, 5296, 6076, 6620, 6944, 7595, 7840, 8680, 9268, 10261, 10592, 11585, 12152, 13240, 15190, 16219, 17360, 18536, 20522, 23170, 24304, 26480, 30380, 32438, 34720, 37072, 41044, 46340, 48608, 51305, 52960, 60760, 64876, 71827, 74144, 81095, 82088, 92680, 102610, 121520, 129752, 143654, 162190, 164176, 185360, 205220, 243040, 259504, 287308, 324380, 328352, 359135, 370720, 410440, 502789, 519008, 574616, 648760, 718270, 820880, 1005578, 1149232, 1297520, 1436540, 1641760, 2011156, 2298464, 2513945, 2595040, 2873080, 4022312, 5027890, 5746160, 8044624, 10055780, 11492320, 16089248, 20111560, 40223120, 80446240]

約数ペア:

[(1, 80446240), (2, 40223120), (4, 20111560), (5, 16089248), (7, 11492320), (8, 10055780), (10, 8044624), (14, 5746160), (16, 5027890), (20, 4022312), (28, 2873080), (31, 2595040), (32, 2513945), (35, 2298464), (40, 2011156), (49, 1641760), (56, 1436540), (62, 1297520), (70, 1149232), (80, 1005578), (98, 820880), (112, 718270), (124, 648760), (140, 574616), (155, 519008), (160, 502789), (196, 410440), (217, 370720), (224, 359135), (245, 328352), (248, 324380), (280, 287308), (310, 259504), (331, 243040), (392, 205220), (434, 185360), (490, 164176), (496, 162190), (560, 143654), (620, 129752), (662, 121520), (784, 102610), (868, 92680), (980, 82088), (992, 81095), (1085, 74144), (1120, 71827), (1240, 64876), (1324, 60760), (1519, 52960), (1568, 51305), (1655, 48608), (1736, 46340), (1960, 41044), (2170, 37072), (2317, 34720), (2480, 32438), (2648, 30380), (3038, 26480), (3310, 24304), (3472, 23170), (3920, 20522), (4340, 18536), (4634, 17360), (4960, 16219), (5296, 15190), (6076, 13240), (6620, 12152), (6944, 11585), (7595, 10592), (7840, 10261), (8680, 9268)]