21709065

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20094711

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 53, 83, 105, 141, 159, 235, 249, 265, 329, 371, 415, 581, 705, 795, 987, 1113, 1245, 1645, 1743, 1855, 2491, 2905, 3901, 4399, 4935, 5565, 7473, 8715, 11703, 12455, 13197, 17437, 19505, 21995, 27307, 30793, 37365, 52311, 58515, 65985, 81921, 87185, 92379, 136535, 153965, 206753, 261555, 409605, 461895, 620259, 1033765, 1447271, 3101295, 4341813, 7236355, 21709065]

約数ペア:

[(1, 21709065), (3, 7236355), (5, 4341813), (7, 3101295), (15, 1447271), (21, 1033765), (35, 620259), (47, 461895), (53, 409605), (83, 261555), (105, 206753), (141, 153965), (159, 136535), (235, 92379), (249, 87185), (265, 81921), (329, 65985), (371, 58515), (415, 52311), (581, 37365), (705, 30793), (795, 27307), (987, 21995), (1113, 19505), (1245, 17437), (1645, 13197), (1743, 12455), (1855, 11703), (2491, 8715), (2905, 7473), (3901, 5565), (4399, 4935)]