20913750

素因数分解:

$2^1\times 3^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^2$

素因数の和:65

約数の個数: 180

約数和(自身を含む): 66887964

約数和(自身を除く): 45974214

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 13, 15, 18, 22, 25, 26, 30, 33, 39, 45, 50, 55, 65, 66, 75, 78, 90, 99, 110, 117, 125, 130, 143, 150, 165, 169, 195, 198, 225, 234, 250, 275, 286, 325, 330, 338, 375, 390, 429, 450, 495, 507, 550, 585, 625, 650, 715, 750, 825, 845, 858, 975, 990, 1014, 1125, 1170, 1250, 1287, 1375, 1430, 1521, 1625, 1650, 1690, 1859, 1875, 1950, 2145, 2250, 2475, 2535, 2574, 2750, 2925, 3042, 3250, 3575, 3718, 3750, 4125, 4225, 4290, 4875, 4950, 5070, 5577, 5625, 5850, 6435, 6875, 7150, 7605, 8125, 8250, 8450, 9295, 9750, 10725, 11154, 11250, 12375, 12675, 12870, 13750, 14625, 15210, 16250, 16731, 17875, 18590, 20625, 21125, 21450, 24375, 24750, 25350, 27885, 29250, 32175, 33462, 35750, 38025, 41250, 42250, 46475, 48750, 53625, 55770, 61875, 63375, 64350, 73125, 76050, 83655, 89375, 92950, 105625, 107250, 123750, 126750, 139425, 146250, 160875, 167310, 178750, 190125, 211250, 232375, 268125, 278850, 316875, 321750, 380250, 418275, 464750, 536250, 633750, 697125, 804375, 836550, 950625, 1161875, 1394250, 1608750, 1901250, 2091375, 2323750, 3485625, 4182750, 6971250, 10456875, 20913750]

約数ペア:

[(1, 20913750), (2, 10456875), (3, 6971250), (5, 4182750), (6, 3485625), (9, 2323750), (10, 2091375), (11, 1901250), (13, 1608750), (15, 1394250), (18, 1161875), (22, 950625), (25, 836550), (26, 804375), (30, 697125), (33, 633750), (39, 536250), (45, 464750), (50, 418275), (55, 380250), (65, 321750), (66, 316875), (75, 278850), (78, 268125), (90, 232375), (99, 211250), (110, 190125), (117, 178750), (125, 167310), (130, 160875), (143, 146250), (150, 139425), (165, 126750), (169, 123750), (195, 107250), (198, 105625), (225, 92950), (234, 89375), (250, 83655), (275, 76050), (286, 73125), (325, 64350), (330, 63375), (338, 61875), (375, 55770), (390, 53625), (429, 48750), (450, 46475), (495, 42250), (507, 41250), (550, 38025), (585, 35750), (625, 33462), (650, 32175), (715, 29250), (750, 27885), (825, 25350), (845, 24750), (858, 24375), (975, 21450), (990, 21125), (1014, 20625), (1125, 18590), (1170, 17875), (1250, 16731), (1287, 16250), (1375, 15210), (1430, 14625), (1521, 13750), (1625, 12870), (1650, 12675), (1690, 12375), (1859, 11250), (1875, 11154), (1950, 10725), (2145, 9750), (2250, 9295), (2475, 8450), (2535, 8250), (2574, 8125), (2750, 7605), (2925, 7150), (3042, 6875), (3250, 6435), (3575, 5850), (3718, 5625), (3750, 5577), (4125, 5070), (4225, 4950), (4290, 4875)]