21733515

素因数分解:

$3^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:641

約数の個数: 40

約数和(自身を含む): 39413088

約数和(自身を除く): 17679573

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 103, 135, 309, 405, 515, 521, 927, 1545, 1563, 2605, 2781, 4635, 4689, 7815, 8343, 13905, 14067, 23445, 41715, 42201, 53663, 70335, 160989, 211005, 268315, 482967, 804945, 1448901, 2414835, 4346703, 7244505, 21733515]

約数ペア:

[(1, 21733515), (3, 7244505), (5, 4346703), (9, 2414835), (15, 1448901), (27, 804945), (45, 482967), (81, 268315), (103, 211005), (135, 160989), (309, 70335), (405, 53663), (515, 42201), (521, 41715), (927, 23445), (1545, 14067), (1563, 13905), (2605, 8343), (2781, 7815), (4635, 4689)]