18845855

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 27675648

約数和(自身を除く): 8829793

約数列:

[1, 5, 7, 23, 35, 41, 115, 161, 205, 287, 571, 805, 943, 1435, 2855, 3997, 4715, 6601, 13133, 19985, 23411, 33005, 65665, 91931, 117055, 163877, 459655, 538453, 819385, 2692265, 3769171, 18845855]

約数ペア:

[(1, 18845855), (5, 3769171), (7, 2692265), (23, 819385), (35, 538453), (41, 459655), (115, 163877), (161, 117055), (205, 91931), (287, 65665), (571, 33005), (805, 23411), (943, 19985), (1435, 13133), (2855, 6601), (3997, 4715)]