21429990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7681}}^1$

素因数の和:7725

約数の個数: 48

約数和(自身を含む): 57522816

約数和(自身を除く): 36092826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7681, 15362, 23043, 38405, 46086, 69129, 76810, 115215, 138258, 230430, 238111, 345645, 476222, 691290, 714333, 1190555, 1428666, 2142999, 2381110, 3571665, 4285998, 7143330, 10714995, 21429990]

約数ペア:

[(1, 21429990), (2, 10714995), (3, 7143330), (5, 4285998), (6, 3571665), (9, 2381110), (10, 2142999), (15, 1428666), (18, 1190555), (30, 714333), (31, 691290), (45, 476222), (62, 345645), (90, 238111), (93, 230430), (155, 138258), (186, 115215), (279, 76810), (310, 69129), (465, 46086), (558, 38405), (930, 23043), (1395, 15362), (2790, 7681)]