18778770

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:616

約数の個数: 64

約数和(自身を含む): 50509440

約数和(自身を除く): 31730670

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 157, 270, 314, 443, 471, 785, 886, 942, 1329, 1413, 1570, 2215, 2355, 2658, 2826, 3987, 4239, 4430, 4710, 6645, 7065, 7974, 8478, 11961, 13290, 14130, 19935, 21195, 23922, 39870, 42390, 59805, 69551, 119610, 139102, 208653, 347755, 417306, 625959, 695510, 1043265, 1251918, 1877877, 2086530, 3129795, 3755754, 6259590, 9389385, 18778770]

約数ペア:

[(1, 18778770), (2, 9389385), (3, 6259590), (5, 3755754), (6, 3129795), (9, 2086530), (10, 1877877), (15, 1251918), (18, 1043265), (27, 695510), (30, 625959), (45, 417306), (54, 347755), (90, 208653), (135, 139102), (157, 119610), (270, 69551), (314, 59805), (443, 42390), (471, 39870), (785, 23922), (886, 21195), (942, 19935), (1329, 14130), (1413, 13290), (1570, 11961), (2215, 8478), (2355, 7974), (2658, 7065), (2826, 6645), (3987, 4710), (4239, 4430)]