51809680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1607}}^1$

素因数の和:1664

約数の個数: 80

約数和(自身を含む): 133991424

約数和(自身を除く): 82181744

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1607, 1612, 2015, 2480, 3214, 3224, 4030, 6428, 6448, 8035, 8060, 12856, 16070, 16120, 20891, 25712, 32140, 32240, 41782, 49817, 64280, 83564, 99634, 104455, 128560, 167128, 199268, 208910, 249085, 334256, 398536, 417820, 498170, 647621, 797072, 835640, 996340, 1295242, 1671280, 1992680, 2590484, 3238105, 3985360, 5180968, 6476210, 10361936, 12952420, 25904840, 51809680]

約数ペア:

[(1, 51809680), (2, 25904840), (4, 12952420), (5, 10361936), (8, 6476210), (10, 5180968), (13, 3985360), (16, 3238105), (20, 2590484), (26, 1992680), (31, 1671280), (40, 1295242), (52, 996340), (62, 835640), (65, 797072), (80, 647621), (104, 498170), (124, 417820), (130, 398536), (155, 334256), (208, 249085), (248, 208910), (260, 199268), (310, 167128), (403, 128560), (496, 104455), (520, 99634), (620, 83564), (806, 64280), (1040, 49817), (1240, 41782), (1607, 32240), (1612, 32140), (2015, 25712), (2480, 20891), (3214, 16120), (3224, 16070), (4030, 12856), (6428, 8060), (6448, 8035)]