21945736

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{491}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 42626880

約数和(自身を除く): 20681144

約数列:

[1, 2, 4, 8, 37, 74, 148, 151, 296, 302, 491, 604, 982, 1208, 1964, 3928, 5587, 11174, 18167, 22348, 36334, 44696, 72668, 74141, 145336, 148282, 296564, 593128, 2743217, 5486434, 10972868, 21945736]

約数ペア:

[(1, 21945736), (2, 10972868), (4, 5486434), (8, 2743217), (37, 593128), (74, 296564), (148, 148282), (151, 145336), (296, 74141), (302, 72668), (491, 44696), (604, 36334), (982, 22348), (1208, 18167), (1964, 11174), (3928, 5587)]