21362715

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 19521765

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 103, 165, 309, 419, 495, 515, 927, 1133, 1257, 1545, 2095, 3399, 3771, 4609, 4635, 5665, 6285, 10197, 13827, 16995, 18855, 23045, 41481, 43157, 50985, 69135, 129471, 207405, 215785, 388413, 474727, 647355, 1424181, 1942065, 2373635, 4272543, 7120905, 21362715]

約数ペア:

[(1, 21362715), (3, 7120905), (5, 4272543), (9, 2373635), (11, 1942065), (15, 1424181), (33, 647355), (45, 474727), (55, 388413), (99, 215785), (103, 207405), (165, 129471), (309, 69135), (419, 50985), (495, 43157), (515, 41481), (927, 23045), (1133, 18855), (1257, 16995), (1545, 13827), (2095, 10197), (3399, 6285), (3771, 5665), (4609, 4635)]