440515920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{521}}^1$

素因数の和:821

約数の個数: 160

約数和(自身を含む): 1478905344

約数和(自身を除く): 1038389424

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 271, 312, 390, 520, 521, 542, 624, 780, 813, 1040, 1042, 1084, 1355, 1560, 1563, 1626, 2084, 2168, 2605, 2710, 3120, 3126, 3252, 3523, 4065, 4168, 4336, 5210, 5420, 6252, 6504, 6773, 7046, 7815, 8130, 8336, 10420, 10569, 10840, 12504, 13008, 13546, 14092, 15630, 16260, 17615, 20319, 20840, 21138, 21680, 25008, 27092, 28184, 31260, 32520, 33865, 35230, 40638, 41680, 42276, 52845, 54184, 56368, 62520, 65040, 67730, 70460, 81276, 84552, 101595, 105690, 108368, 125040, 135460, 140920, 141191, 162552, 169104, 203190, 211380, 270920, 281840, 282382, 325104, 406380, 422760, 423573, 541840, 564764, 705955, 812760, 845520, 847146, 1129528, 1411910, 1625520, 1694292, 1835483, 2117865, 2259056, 2823820, 3388584, 3670966, 4235730, 5506449, 5647640, 6777168, 7341932, 8471460, 9177415, 11012898, 11295280, 14683864, 16942920, 18354830, 22025796, 27532245, 29367728, 33885840, 36709660, 44051592, 55064490, 73419320, 88103184, 110128980, 146838640, 220257960, 440515920]

約数ペア:

[(1, 440515920), (2, 220257960), (3, 146838640), (4, 110128980), (5, 88103184), (6, 73419320), (8, 55064490), (10, 44051592), (12, 36709660), (13, 33885840), (15, 29367728), (16, 27532245), (20, 22025796), (24, 18354830), (26, 16942920), (30, 14683864), (39, 11295280), (40, 11012898), (48, 9177415), (52, 8471460), (60, 7341932), (65, 6777168), (78, 5647640), (80, 5506449), (104, 4235730), (120, 3670966), (130, 3388584), (156, 2823820), (195, 2259056), (208, 2117865), (240, 1835483), (260, 1694292), (271, 1625520), (312, 1411910), (390, 1129528), (520, 847146), (521, 845520), (542, 812760), (624, 705955), (780, 564764), (813, 541840), (1040, 423573), (1042, 422760), (1084, 406380), (1355, 325104), (1560, 282382), (1563, 281840), (1626, 270920), (2084, 211380), (2168, 203190), (2605, 169104), (2710, 162552), (3120, 141191), (3126, 140920), (3252, 135460), (3523, 125040), (4065, 108368), (4168, 105690), (4336, 101595), (5210, 84552), (5420, 81276), (6252, 70460), (6504, 67730), (6773, 65040), (7046, 62520), (7815, 56368), (8130, 54184), (8336, 52845), (10420, 42276), (10569, 41680), (10840, 40638), (12504, 35230), (13008, 33865), (13546, 32520), (14092, 31260), (15630, 28184), (16260, 27092), (17615, 25008), (20319, 21680), (20840, 21138)]