21562020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1163}}^1$

素因数の和:1281

約数の個数: 72

約数和(自身を含む): 66096576

約数和(自身を除く): 44534556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1163, 1236, 1545, 1854, 2060, 2326, 3090, 3489, 3708, 4635, 4652, 5815, 6180, 6978, 9270, 10467, 11630, 13956, 17445, 18540, 20934, 23260, 34890, 41868, 52335, 69780, 104670, 119789, 209340, 239578, 359367, 479156, 598945, 718734, 1078101, 1197890, 1437468, 1796835, 2156202, 2395780, 3593670, 4312404, 5390505, 7187340, 10781010, 21562020]

約数ペア:

[(1, 21562020), (2, 10781010), (3, 7187340), (4, 5390505), (5, 4312404), (6, 3593670), (9, 2395780), (10, 2156202), (12, 1796835), (15, 1437468), (18, 1197890), (20, 1078101), (30, 718734), (36, 598945), (45, 479156), (60, 359367), (90, 239578), (103, 209340), (180, 119789), (206, 104670), (309, 69780), (412, 52335), (515, 41868), (618, 34890), (927, 23260), (1030, 20934), (1163, 18540), (1236, 17445), (1545, 13956), (1854, 11630), (2060, 10467), (2326, 9270), (3090, 6978), (3489, 6180), (3708, 5815), (4635, 4652)]