20002388

素因数分解:

$2^2\times 7^3\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 41664000

約数和(自身を除く): 21661612

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 239, 244, 343, 427, 478, 686, 854, 956, 1372, 1673, 1708, 2989, 3346, 5978, 6692, 11711, 11956, 14579, 20923, 23422, 29158, 41846, 46844, 58316, 81977, 83692, 102053, 163954, 204106, 327908, 408212, 714371, 1428742, 2857484, 5000597, 10001194, 20002388]

約数ペア:

[(1, 20002388), (2, 10001194), (4, 5000597), (7, 2857484), (14, 1428742), (28, 714371), (49, 408212), (61, 327908), (98, 204106), (122, 163954), (196, 102053), (239, 83692), (244, 81977), (343, 58316), (427, 46844), (478, 41846), (686, 29158), (854, 23422), (956, 20923), (1372, 14579), (1673, 11956), (1708, 11711), (2989, 6692), (3346, 5978)]