20155321845

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{221621}}^1$

素因数の和:221722

約数の個数: 48

約数和(自身を含む): 36509121792

約数和(自身を除く): 16353799947

約数列:

[1, 3, 5, 9, 15, 43, 45, 47, 129, 141, 215, 235, 387, 423, 645, 705, 1935, 2021, 2115, 6063, 10105, 18189, 30315, 90945, 221621, 664863, 1108105, 1994589, 3324315, 9529703, 9972945, 10416187, 28589109, 31248561, 47648515, 52080935, 85767327, 93745683, 142945545, 156242805, 428836635, 447896041, 468728415, 1343688123, 2239480205, 4031064369, 6718440615, 20155321845]

約数ペア:

[(1, 20155321845), (3, 6718440615), (5, 4031064369), (9, 2239480205), (15, 1343688123), (43, 468728415), (45, 447896041), (47, 428836635), (129, 156242805), (141, 142945545), (215, 93745683), (235, 85767327), (387, 52080935), (423, 47648515), (645, 31248561), (705, 28589109), (1935, 10416187), (2021, 9972945), (2115, 9529703), (6063, 3324315), (10105, 1994589), (18189, 1108105), (30315, 664863), (90945, 221621)]