21125416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{10691}}^1$

素因数の和:10729

約数の個数: 32

約数和(自身を含む): 44906400

約数和(自身を除く): 23780984

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 247, 494, 988, 1976, 10691, 21382, 42764, 85528, 138983, 203129, 277966, 406258, 555932, 812516, 1111864, 1625032, 2640677, 5281354, 10562708, 21125416]

約数ペア:

[(1, 21125416), (2, 10562708), (4, 5281354), (8, 2640677), (13, 1625032), (19, 1111864), (26, 812516), (38, 555932), (52, 406258), (76, 277966), (104, 203129), (152, 138983), (247, 85528), (494, 42764), (988, 21382), (1976, 10691)]