18671840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^2$

素因数の和:232

約数の個数: 72

約数和(自身を含む): 48594168

約数和(自身を除く): 29922328

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 103, 110, 160, 176, 206, 220, 352, 412, 440, 515, 824, 880, 1030, 1133, 1648, 1760, 2060, 2266, 3296, 4120, 4532, 5665, 8240, 9064, 10609, 11330, 16480, 18128, 21218, 22660, 36256, 42436, 45320, 53045, 84872, 90640, 106090, 116699, 169744, 181280, 212180, 233398, 339488, 424360, 466796, 583495, 848720, 933592, 1166990, 1697440, 1867184, 2333980, 3734368, 4667960, 9335920, 18671840]

約数ペア:

[(1, 18671840), (2, 9335920), (4, 4667960), (5, 3734368), (8, 2333980), (10, 1867184), (11, 1697440), (16, 1166990), (20, 933592), (22, 848720), (32, 583495), (40, 466796), (44, 424360), (55, 339488), (80, 233398), (88, 212180), (103, 181280), (110, 169744), (160, 116699), (176, 106090), (206, 90640), (220, 84872), (352, 53045), (412, 45320), (440, 42436), (515, 36256), (824, 22660), (880, 21218), (1030, 18128), (1133, 16480), (1648, 11330), (1760, 10609), (2060, 9064), (2266, 8240), (3296, 5665), (4120, 4532)]