21146268728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1723}}^1\times {\mathrm{6211}}^1$

素因数の和:7972

約数の個数: 64

約数和(自身を含む): 44979849600

約数和(自身を除く): 23833580872

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1723, 1976, 3446, 6211, 6892, 12422, 13784, 22399, 24844, 32737, 44798, 49688, 65474, 80743, 89596, 118009, 130948, 161486, 179192, 236018, 261896, 322972, 425581, 472036, 645944, 851162, 944072, 1534117, 1702324, 3068234, 3404648, 6136468, 10701553, 12272936, 21403106, 42806212, 85612424, 139120189, 203329507, 278240378, 406659014, 556480756, 813318028, 1112961512, 1626636056, 2643283591, 5286567182, 10573134364, 21146268728]

約数ペア:

[(1, 21146268728), (2, 10573134364), (4, 5286567182), (8, 2643283591), (13, 1626636056), (19, 1112961512), (26, 813318028), (38, 556480756), (52, 406659014), (76, 278240378), (104, 203329507), (152, 139120189), (247, 85612424), (494, 42806212), (988, 21403106), (1723, 12272936), (1976, 10701553), (3446, 6136468), (6211, 3404648), (6892, 3068234), (12422, 1702324), (13784, 1534117), (22399, 944072), (24844, 851162), (32737, 645944), (44798, 472036), (49688, 425581), (65474, 322972), (80743, 261896), (89596, 236018), (118009, 179192), (130948, 161486)]