21545505

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 17451999

約数列:

[1, 3, 5, 9, 15, 45, 47, 61, 141, 167, 183, 235, 305, 423, 501, 549, 705, 835, 915, 1503, 2115, 2505, 2745, 2867, 7515, 7849, 8601, 10187, 14335, 23547, 25803, 30561, 39245, 43005, 50935, 70641, 91683, 117735, 129015, 152805, 353205, 458415, 478789, 1436367, 2393945, 4309101, 7181835, 21545505]

約数ペア:

[(1, 21545505), (3, 7181835), (5, 4309101), (9, 2393945), (15, 1436367), (45, 478789), (47, 458415), (61, 353205), (141, 152805), (167, 129015), (183, 117735), (235, 91683), (305, 70641), (423, 50935), (501, 43005), (549, 39245), (705, 30561), (835, 25803), (915, 23547), (1503, 14335), (2115, 10187), (2505, 8601), (2745, 7849), (2867, 7515)]