20846800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 57044960

約数和(自身を除く): 36198160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 130, 152, 190, 200, 208, 211, 247, 260, 304, 325, 380, 400, 422, 475, 494, 520, 650, 760, 844, 950, 988, 1040, 1055, 1235, 1300, 1520, 1688, 1900, 1976, 2110, 2470, 2600, 2743, 3376, 3800, 3952, 4009, 4220, 4940, 5200, 5275, 5486, 6175, 7600, 8018, 8440, 9880, 10550, 10972, 12350, 13715, 16036, 16880, 19760, 20045, 21100, 21944, 24700, 27430, 32072, 40090, 42200, 43888, 49400, 52117, 54860, 64144, 68575, 80180, 84400, 98800, 100225, 104234, 109720, 137150, 160360, 200450, 208468, 219440, 260585, 274300, 320720, 400900, 416936, 521170, 548600, 801800, 833872, 1042340, 1097200, 1302925, 1603600, 2084680, 2605850, 4169360, 5211700, 10423400, 20846800]

約数ペア:

[(1, 20846800), (2, 10423400), (4, 5211700), (5, 4169360), (8, 2605850), (10, 2084680), (13, 1603600), (16, 1302925), (19, 1097200), (20, 1042340), (25, 833872), (26, 801800), (38, 548600), (40, 521170), (50, 416936), (52, 400900), (65, 320720), (76, 274300), (80, 260585), (95, 219440), (100, 208468), (104, 200450), (130, 160360), (152, 137150), (190, 109720), (200, 104234), (208, 100225), (211, 98800), (247, 84400), (260, 80180), (304, 68575), (325, 64144), (380, 54860), (400, 52117), (422, 49400), (475, 43888), (494, 42200), (520, 40090), (650, 32072), (760, 27430), (844, 24700), (950, 21944), (988, 21100), (1040, 20045), (1055, 19760), (1235, 16880), (1300, 16036), (1520, 13715), (1688, 12350), (1900, 10972), (1976, 10550), (2110, 9880), (2470, 8440), (2600, 8018), (2743, 7600), (3376, 6175), (3800, 5486), (3952, 5275), (4009, 5200), (4220, 4940)]