21490410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{2663}}^1$

素因数の和:2942

約数の個数: 32

約数和(自身を含む): 51788160

約数和(自身を除く): 30297750

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 269, 538, 807, 1345, 1614, 2663, 2690, 4035, 5326, 7989, 8070, 13315, 15978, 26630, 39945, 79890, 716347, 1432694, 2149041, 3581735, 4298082, 7163470, 10745205, 21490410]

約数ペア:

[(1, 21490410), (2, 10745205), (3, 7163470), (5, 4298082), (6, 3581735), (10, 2149041), (15, 1432694), (30, 716347), (269, 79890), (538, 39945), (807, 26630), (1345, 15978), (1614, 13315), (2663, 8070), (2690, 7989), (4035, 5326)]