20865000

素因数分解:

$2^3\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:149

約数の個数: 160

約数和(自身を含む): 70852320

約数和(自身を除く): 49987320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 25, 26, 30, 39, 40, 50, 52, 60, 65, 75, 78, 100, 104, 107, 120, 125, 130, 150, 156, 195, 200, 214, 250, 260, 300, 312, 321, 325, 375, 390, 428, 500, 520, 535, 600, 625, 642, 650, 750, 780, 856, 975, 1000, 1070, 1250, 1284, 1300, 1391, 1500, 1560, 1605, 1625, 1875, 1950, 2140, 2500, 2568, 2600, 2675, 2782, 3000, 3210, 3250, 3750, 3900, 4173, 4280, 4875, 5000, 5350, 5564, 6420, 6500, 6955, 7500, 7800, 8025, 8125, 8346, 9750, 10700, 11128, 12840, 13000, 13375, 13910, 15000, 16050, 16250, 16692, 19500, 20865, 21400, 24375, 26750, 27820, 32100, 32500, 33384, 34775, 39000, 40125, 41730, 48750, 53500, 55640, 64200, 65000, 66875, 69550, 80250, 83460, 97500, 104325, 107000, 133750, 139100, 160500, 166920, 173875, 195000, 200625, 208650, 267500, 278200, 321000, 347750, 401250, 417300, 521625, 535000, 695500, 802500, 834600, 869375, 1043250, 1391000, 1605000, 1738750, 2086500, 2608125, 3477500, 4173000, 5216250, 6955000, 10432500, 20865000]

約数ペア:

[(1, 20865000), (2, 10432500), (3, 6955000), (4, 5216250), (5, 4173000), (6, 3477500), (8, 2608125), (10, 2086500), (12, 1738750), (13, 1605000), (15, 1391000), (20, 1043250), (24, 869375), (25, 834600), (26, 802500), (30, 695500), (39, 535000), (40, 521625), (50, 417300), (52, 401250), (60, 347750), (65, 321000), (75, 278200), (78, 267500), (100, 208650), (104, 200625), (107, 195000), (120, 173875), (125, 166920), (130, 160500), (150, 139100), (156, 133750), (195, 107000), (200, 104325), (214, 97500), (250, 83460), (260, 80250), (300, 69550), (312, 66875), (321, 65000), (325, 64200), (375, 55640), (390, 53500), (428, 48750), (500, 41730), (520, 40125), (535, 39000), (600, 34775), (625, 33384), (642, 32500), (650, 32100), (750, 27820), (780, 26750), (856, 24375), (975, 21400), (1000, 20865), (1070, 19500), (1250, 16692), (1284, 16250), (1300, 16050), (1391, 15000), (1500, 13910), (1560, 13375), (1605, 13000), (1625, 12840), (1875, 11128), (1950, 10700), (2140, 9750), (2500, 8346), (2568, 8125), (2600, 8025), (2675, 7800), (2782, 7500), (3000, 6955), (3210, 6500), (3250, 6420), (3750, 5564), (3900, 5350), (4173, 5000), (4280, 4875)]