21200972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{827}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 22616788

約数列:

[1, 2, 4, 13, 17, 26, 29, 34, 52, 58, 68, 116, 221, 377, 442, 493, 754, 827, 884, 986, 1508, 1654, 1972, 3308, 6409, 10751, 12818, 14059, 21502, 23983, 25636, 28118, 43004, 47966, 56236, 95932, 182767, 311779, 365534, 407711, 623558, 731068, 815422, 1247116, 1630844, 5300243, 10600486, 21200972]

約数ペア:

[(1, 21200972), (2, 10600486), (4, 5300243), (13, 1630844), (17, 1247116), (26, 815422), (29, 731068), (34, 623558), (52, 407711), (58, 365534), (68, 311779), (116, 182767), (221, 95932), (377, 56236), (442, 47966), (493, 43004), (754, 28118), (827, 25636), (884, 23983), (986, 21502), (1508, 14059), (1654, 12818), (1972, 10751), (3308, 6409)]