20445750

素因数分解:

$2^1\times 3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{233}}^1$

素因数の和:272

約数の個数: 128

約数和(自身を含む): 61326720

約数和(自身を除く): 40880970

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 25, 26, 27, 30, 39, 45, 50, 54, 65, 75, 78, 90, 117, 125, 130, 135, 150, 195, 225, 233, 234, 250, 270, 325, 351, 375, 390, 450, 466, 585, 650, 675, 699, 702, 750, 975, 1125, 1165, 1170, 1350, 1398, 1625, 1755, 1950, 2097, 2250, 2330, 2925, 3029, 3250, 3375, 3495, 3510, 4194, 4875, 5825, 5850, 6058, 6291, 6750, 6990, 8775, 9087, 9750, 10485, 11650, 12582, 14625, 15145, 17475, 17550, 18174, 20970, 27261, 29125, 29250, 30290, 31455, 34950, 43875, 45435, 52425, 54522, 58250, 62910, 75725, 81783, 87375, 87750, 90870, 104850, 136305, 151450, 157275, 163566, 174750, 227175, 262125, 272610, 314550, 378625, 408915, 454350, 524250, 681525, 757250, 786375, 817830, 1135875, 1363050, 1572750, 2044575, 2271750, 3407625, 4089150, 6815250, 10222875, 20445750]

約数ペア:

[(1, 20445750), (2, 10222875), (3, 6815250), (5, 4089150), (6, 3407625), (9, 2271750), (10, 2044575), (13, 1572750), (15, 1363050), (18, 1135875), (25, 817830), (26, 786375), (27, 757250), (30, 681525), (39, 524250), (45, 454350), (50, 408915), (54, 378625), (65, 314550), (75, 272610), (78, 262125), (90, 227175), (117, 174750), (125, 163566), (130, 157275), (135, 151450), (150, 136305), (195, 104850), (225, 90870), (233, 87750), (234, 87375), (250, 81783), (270, 75725), (325, 62910), (351, 58250), (375, 54522), (390, 52425), (450, 45435), (466, 43875), (585, 34950), (650, 31455), (675, 30290), (699, 29250), (702, 29125), (750, 27261), (975, 20970), (1125, 18174), (1165, 17550), (1170, 17475), (1350, 15145), (1398, 14625), (1625, 12582), (1755, 11650), (1950, 10485), (2097, 9750), (2250, 9087), (2330, 8775), (2925, 6990), (3029, 6750), (3250, 6291), (3375, 6058), (3495, 5850), (3510, 5825), (4194, 4875)]