19515320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2609}}^1$

素因数の和:2648

約数の個数: 64

約数和(自身を含む): 50738400

約数和(自身を除く): 31223080

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2609, 3740, 5218, 7480, 10436, 13045, 20872, 26090, 28699, 44353, 52180, 57398, 88706, 104360, 114796, 143495, 177412, 221765, 229592, 286990, 354824, 443530, 487883, 573980, 887060, 975766, 1147960, 1774120, 1951532, 2439415, 3903064, 4878830, 9757660, 19515320]

約数ペア:

[(1, 19515320), (2, 9757660), (4, 4878830), (5, 3903064), (8, 2439415), (10, 1951532), (11, 1774120), (17, 1147960), (20, 975766), (22, 887060), (34, 573980), (40, 487883), (44, 443530), (55, 354824), (68, 286990), (85, 229592), (88, 221765), (110, 177412), (136, 143495), (170, 114796), (187, 104360), (220, 88706), (340, 57398), (374, 52180), (440, 44353), (680, 28699), (748, 26090), (935, 20872), (1496, 13045), (1870, 10436), (2609, 7480), (3740, 5218)]