20722260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:913

約数の個数: 96

約数和(自身を含む): 64576512

約数和(自身を除く): 43854252

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 31, 39, 52, 60, 62, 65, 78, 93, 124, 130, 155, 156, 186, 195, 260, 310, 372, 390, 403, 465, 620, 780, 806, 857, 930, 1209, 1612, 1714, 1860, 2015, 2418, 2571, 3428, 4030, 4285, 4836, 5142, 6045, 8060, 8570, 10284, 11141, 12090, 12855, 17140, 22282, 24180, 25710, 26567, 33423, 44564, 51420, 53134, 55705, 66846, 79701, 106268, 111410, 132835, 133692, 159402, 167115, 222820, 265670, 318804, 334230, 345371, 398505, 531340, 668460, 690742, 797010, 1036113, 1381484, 1594020, 1726855, 2072226, 3453710, 4144452, 5180565, 6907420, 10361130, 20722260]

約数ペア:

[(1, 20722260), (2, 10361130), (3, 6907420), (4, 5180565), (5, 4144452), (6, 3453710), (10, 2072226), (12, 1726855), (13, 1594020), (15, 1381484), (20, 1036113), (26, 797010), (30, 690742), (31, 668460), (39, 531340), (52, 398505), (60, 345371), (62, 334230), (65, 318804), (78, 265670), (93, 222820), (124, 167115), (130, 159402), (155, 133692), (156, 132835), (186, 111410), (195, 106268), (260, 79701), (310, 66846), (372, 55705), (390, 53134), (403, 51420), (465, 44564), (620, 33423), (780, 26567), (806, 25710), (857, 24180), (930, 22282), (1209, 17140), (1612, 12855), (1714, 12090), (1860, 11141), (2015, 10284), (2418, 8570), (2571, 8060), (3428, 6045), (4030, 5142), (4285, 4836)]