20471100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 66349920

約数和(自身を除く): 45878820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 29, 30, 39, 50, 52, 58, 60, 65, 75, 78, 87, 100, 116, 130, 145, 150, 156, 174, 181, 195, 260, 290, 300, 325, 348, 362, 377, 390, 435, 543, 580, 650, 724, 725, 754, 780, 870, 905, 975, 1086, 1131, 1300, 1450, 1508, 1740, 1810, 1885, 1950, 2172, 2175, 2262, 2353, 2715, 2900, 3620, 3770, 3900, 4350, 4524, 4525, 4706, 5249, 5430, 5655, 7059, 7540, 8700, 9050, 9412, 9425, 10498, 10860, 11310, 11765, 13575, 14118, 15747, 18100, 18850, 20996, 22620, 23530, 26245, 27150, 28236, 28275, 31494, 35295, 37700, 47060, 52490, 54300, 56550, 58825, 62988, 68237, 70590, 78735, 104980, 113100, 117650, 131225, 136474, 141180, 157470, 176475, 204711, 235300, 262450, 272948, 314940, 341185, 352950, 393675, 409422, 524900, 682370, 705900, 787350, 818844, 1023555, 1364740, 1574700, 1705925, 2047110, 3411850, 4094220, 5117775, 6823700, 10235550, 20471100]

約数ペア:

[(1, 20471100), (2, 10235550), (3, 6823700), (4, 5117775), (5, 4094220), (6, 3411850), (10, 2047110), (12, 1705925), (13, 1574700), (15, 1364740), (20, 1023555), (25, 818844), (26, 787350), (29, 705900), (30, 682370), (39, 524900), (50, 409422), (52, 393675), (58, 352950), (60, 341185), (65, 314940), (75, 272948), (78, 262450), (87, 235300), (100, 204711), (116, 176475), (130, 157470), (145, 141180), (150, 136474), (156, 131225), (174, 117650), (181, 113100), (195, 104980), (260, 78735), (290, 70590), (300, 68237), (325, 62988), (348, 58825), (362, 56550), (377, 54300), (390, 52490), (435, 47060), (543, 37700), (580, 35295), (650, 31494), (724, 28275), (725, 28236), (754, 27150), (780, 26245), (870, 23530), (905, 22620), (975, 20996), (1086, 18850), (1131, 18100), (1300, 15747), (1450, 14118), (1508, 13575), (1740, 11765), (1810, 11310), (1885, 10860), (1950, 10498), (2172, 9425), (2175, 9412), (2262, 9050), (2353, 8700), (2715, 7540), (2900, 7059), (3620, 5655), (3770, 5430), (3900, 5249), (4350, 4706), (4524, 4525)]