21390922

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:163

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20081078

約数列:

[1, 2, 7, 14, 19, 29, 38, 47, 58, 59, 94, 118, 133, 203, 266, 329, 406, 413, 551, 658, 826, 893, 1102, 1121, 1363, 1711, 1786, 2242, 2726, 2773, 3422, 3857, 5546, 6251, 7714, 7847, 9541, 11977, 12502, 15694, 19082, 19411, 23954, 25897, 32509, 38822, 51794, 52687, 65018, 80417, 105374, 160834, 181279, 227563, 362558, 368809, 455126, 562919, 737618, 1125838, 1527923, 3055846, 10695461, 21390922]

約数ペア:

[(1, 21390922), (2, 10695461), (7, 3055846), (14, 1527923), (19, 1125838), (29, 737618), (38, 562919), (47, 455126), (58, 368809), (59, 362558), (94, 227563), (118, 181279), (133, 160834), (203, 105374), (266, 80417), (329, 65018), (406, 52687), (413, 51794), (551, 38822), (658, 32509), (826, 25897), (893, 23954), (1102, 19411), (1121, 19082), (1363, 15694), (1711, 12502), (1786, 11977), (2242, 9541), (2726, 7847), (2773, 7714), (3422, 6251), (3857, 5546)]