20871816

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{439}}^1$

素因数の和:738

約数の個数: 64

約数和(自身を含む): 59980800

約数和(自身を除く): 39108984

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 283, 439, 566, 849, 878, 1132, 1317, 1698, 1756, 1981, 2264, 2634, 3073, 3396, 3512, 3962, 5268, 5943, 6146, 6792, 7924, 9219, 10536, 11886, 12292, 15848, 18438, 23772, 24584, 36876, 47544, 73752, 124237, 248474, 372711, 496948, 745422, 869659, 993896, 1490844, 1739318, 2608977, 2981688, 3478636, 5217954, 6957272, 10435908, 20871816]

約数ペア:

[(1, 20871816), (2, 10435908), (3, 6957272), (4, 5217954), (6, 3478636), (7, 2981688), (8, 2608977), (12, 1739318), (14, 1490844), (21, 993896), (24, 869659), (28, 745422), (42, 496948), (56, 372711), (84, 248474), (168, 124237), (283, 73752), (439, 47544), (566, 36876), (849, 24584), (878, 23772), (1132, 18438), (1317, 15848), (1698, 12292), (1756, 11886), (1981, 10536), (2264, 9219), (2634, 7924), (3073, 6792), (3396, 6146), (3512, 5943), (3962, 5268)]