256503780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{599}}^1$

素因数の和:691

約数の個数: 192

約数和(自身を含む): 874944000

約数和(自身を除く): 618440220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 61, 65, 78, 90, 108, 117, 122, 130, 135, 156, 180, 183, 195, 234, 244, 260, 270, 305, 351, 366, 390, 468, 540, 549, 585, 599, 610, 702, 732, 780, 793, 915, 1098, 1170, 1198, 1220, 1404, 1586, 1647, 1755, 1797, 1830, 2196, 2340, 2379, 2396, 2745, 2995, 3172, 3294, 3510, 3594, 3660, 3965, 4758, 5391, 5490, 5990, 6588, 7020, 7137, 7188, 7787, 7930, 8235, 8985, 9516, 10782, 10980, 11895, 11980, 14274, 15574, 15860, 16173, 16470, 17970, 21411, 21564, 23361, 23790, 26955, 28548, 31148, 32346, 32940, 35685, 35940, 36539, 38935, 42822, 46722, 47580, 53910, 64692, 70083, 71370, 73078, 77870, 80865, 85644, 93444, 107055, 107820, 109617, 116805, 140166, 142740, 146156, 155740, 161730, 182695, 210249, 214110, 219234, 233610, 280332, 323460, 328851, 350415, 365390, 420498, 428220, 438468, 467220, 475007, 548085, 657702, 700830, 730780, 840996, 950014, 986553, 1051245, 1096170, 1315404, 1401660, 1425021, 1644255, 1900028, 1973106, 2102490, 2192340, 2375035, 2850042, 3288510, 3946212, 4204980, 4275063, 4750070, 4932765, 5700084, 6577020, 7125105, 8550126, 9500140, 9865530, 12825189, 14250210, 17100252, 19731060, 21375315, 25650378, 28500420, 42750630, 51300756, 64125945, 85501260, 128251890, 256503780]

約数ペア:

[(1, 256503780), (2, 128251890), (3, 85501260), (4, 64125945), (5, 51300756), (6, 42750630), (9, 28500420), (10, 25650378), (12, 21375315), (13, 19731060), (15, 17100252), (18, 14250210), (20, 12825189), (26, 9865530), (27, 9500140), (30, 8550126), (36, 7125105), (39, 6577020), (45, 5700084), (52, 4932765), (54, 4750070), (60, 4275063), (61, 4204980), (65, 3946212), (78, 3288510), (90, 2850042), (108, 2375035), (117, 2192340), (122, 2102490), (130, 1973106), (135, 1900028), (156, 1644255), (180, 1425021), (183, 1401660), (195, 1315404), (234, 1096170), (244, 1051245), (260, 986553), (270, 950014), (305, 840996), (351, 730780), (366, 700830), (390, 657702), (468, 548085), (540, 475007), (549, 467220), (585, 438468), (599, 428220), (610, 420498), (702, 365390), (732, 350415), (780, 328851), (793, 323460), (915, 280332), (1098, 233610), (1170, 219234), (1198, 214110), (1220, 210249), (1404, 182695), (1586, 161730), (1647, 155740), (1755, 146156), (1797, 142740), (1830, 140166), (2196, 116805), (2340, 109617), (2379, 107820), (2396, 107055), (2745, 93444), (2995, 85644), (3172, 80865), (3294, 77870), (3510, 73078), (3594, 71370), (3660, 70083), (3965, 64692), (4758, 53910), (5391, 47580), (5490, 46722), (5990, 42822), (6588, 38935), (7020, 36539), (7137, 35940), (7188, 35685), (7787, 32940), (7930, 32346), (8235, 31148), (8985, 28548), (9516, 26955), (10782, 23790), (10980, 23361), (11895, 21564), (11980, 21411), (14274, 17970), (15574, 16470), (15860, 16173)]