20643705

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{167}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 37425024

約数和(自身を除く): 16781319

約数列:

[1, 3, 5, 9, 15, 41, 45, 67, 123, 167, 201, 205, 335, 369, 501, 603, 615, 835, 1005, 1503, 1845, 2505, 2747, 3015, 6847, 7515, 8241, 11189, 13735, 20541, 24723, 33567, 34235, 41205, 55945, 61623, 100701, 102705, 123615, 167835, 308115, 458749, 503505, 1376247, 2293745, 4128741, 6881235, 20643705]

約数ペア:

[(1, 20643705), (3, 6881235), (5, 4128741), (9, 2293745), (15, 1376247), (41, 503505), (45, 458749), (67, 308115), (123, 167835), (167, 123615), (201, 102705), (205, 100701), (335, 61623), (369, 55945), (501, 41205), (603, 34235), (615, 33567), (835, 24723), (1005, 20541), (1503, 13735), (1845, 11189), (2505, 8241), (2747, 7515), (3015, 6847)]