21003996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{10357}}^1$

素因数の和:10390

約数の個数: 36

約数和(自身を含む): 53074392

約数和(自身を除く): 32070396

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014, 2028, 10357, 20714, 31071, 41428, 62142, 124284, 134641, 269282, 403923, 538564, 807846, 1615692, 1750333, 3500666, 5250999, 7001332, 10501998, 21003996]

約数ペア:

[(1, 21003996), (2, 10501998), (3, 7001332), (4, 5250999), (6, 3500666), (12, 1750333), (13, 1615692), (26, 807846), (39, 538564), (52, 403923), (78, 269282), (156, 134641), (169, 124284), (338, 62142), (507, 41428), (676, 31071), (1014, 20714), (2028, 10357)]