20787420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5171}}^1$

素因数の和:5250

約数の個数: 48

約数和(自身を含む): 59084928

約数和(自身を除く): 38297508

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 5171, 10342, 15513, 20684, 25855, 31026, 51710, 62052, 77565, 103420, 155130, 310260, 346457, 692914, 1039371, 1385828, 1732285, 2078742, 3464570, 4157484, 5196855, 6929140, 10393710, 20787420]

約数ペア:

[(1, 20787420), (2, 10393710), (3, 6929140), (4, 5196855), (5, 4157484), (6, 3464570), (10, 2078742), (12, 1732285), (15, 1385828), (20, 1039371), (30, 692914), (60, 346457), (67, 310260), (134, 155130), (201, 103420), (268, 77565), (335, 62052), (402, 51710), (670, 31026), (804, 25855), (1005, 20684), (1340, 15513), (2010, 10342), (4020, 5171)]