18725330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 39644640

約数和(自身を除く): 20919310

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 37, 65, 74, 85, 130, 170, 185, 221, 229, 370, 442, 458, 481, 629, 962, 1105, 1145, 1258, 2210, 2290, 2405, 2977, 3145, 3893, 4810, 5954, 6290, 7786, 8177, 8473, 14885, 16354, 16946, 19465, 29770, 38930, 40885, 42365, 50609, 81770, 84730, 101218, 110149, 144041, 220298, 253045, 288082, 506090, 550745, 720205, 1101490, 1440410, 1872533, 3745066, 9362665, 18725330]

約数ペア:

[(1, 18725330), (2, 9362665), (5, 3745066), (10, 1872533), (13, 1440410), (17, 1101490), (26, 720205), (34, 550745), (37, 506090), (65, 288082), (74, 253045), (85, 220298), (130, 144041), (170, 110149), (185, 101218), (221, 84730), (229, 81770), (370, 50609), (442, 42365), (458, 40885), (481, 38930), (629, 29770), (962, 19465), (1105, 16946), (1145, 16354), (1258, 14885), (2210, 8473), (2290, 8177), (2405, 7786), (2977, 6290), (3145, 5954), (3893, 4810)]