18991740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5189}}^1$

素因数の和:5262

約数の個数: 48

約数和(自身を含む): 54059040

約数和(自身を除く): 35067300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5189, 10378, 15567, 20756, 25945, 31134, 51890, 62268, 77835, 103780, 155670, 311340, 316529, 633058, 949587, 1266116, 1582645, 1899174, 3165290, 3798348, 4747935, 6330580, 9495870, 18991740]

約数ペア:

[(1, 18991740), (2, 9495870), (3, 6330580), (4, 4747935), (5, 3798348), (6, 3165290), (10, 1899174), (12, 1582645), (15, 1266116), (20, 949587), (30, 633058), (60, 316529), (61, 311340), (122, 155670), (183, 103780), (244, 77835), (305, 62268), (366, 51890), (610, 31134), (732, 25945), (915, 20756), (1220, 15567), (1830, 10378), (3660, 5189)]