51231780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1181}}^1$

素因数の和:1437

約数の個数: 72

約数和(自身を含む): 156180024

約数和(自身を除く): 104948244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 241, 482, 723, 964, 1181, 1205, 1446, 2169, 2362, 2410, 2892, 3543, 3615, 4338, 4724, 4820, 5905, 7086, 7230, 8676, 10629, 10845, 11810, 14172, 14460, 17715, 21258, 21690, 23620, 35430, 42516, 43380, 53145, 70860, 106290, 212580, 284621, 569242, 853863, 1138484, 1423105, 1707726, 2561589, 2846210, 3415452, 4269315, 5123178, 5692420, 8538630, 10246356, 12807945, 17077260, 25615890, 51231780]

約数ペア:

[(1, 51231780), (2, 25615890), (3, 17077260), (4, 12807945), (5, 10246356), (6, 8538630), (9, 5692420), (10, 5123178), (12, 4269315), (15, 3415452), (18, 2846210), (20, 2561589), (30, 1707726), (36, 1423105), (45, 1138484), (60, 853863), (90, 569242), (180, 284621), (241, 212580), (482, 106290), (723, 70860), (964, 53145), (1181, 43380), (1205, 42516), (1446, 35430), (2169, 23620), (2362, 21690), (2410, 21258), (2892, 17715), (3543, 14460), (3615, 14172), (4338, 11810), (4724, 10845), (4820, 10629), (5905, 8676), (7086, 7230)]