21101476

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 22363484

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 587, 817, 836, 946, 1174, 1634, 1892, 2348, 3268, 6457, 8987, 11153, 12914, 17974, 22306, 25241, 25828, 35948, 44612, 50482, 100964, 122683, 245366, 277651, 479579, 490732, 555302, 959158, 1110604, 1918316, 5275369, 10550738, 21101476]

約数ペア:

[(1, 21101476), (2, 10550738), (4, 5275369), (11, 1918316), (19, 1110604), (22, 959158), (38, 555302), (43, 490732), (44, 479579), (76, 277651), (86, 245366), (172, 122683), (209, 100964), (418, 50482), (473, 44612), (587, 35948), (817, 25828), (836, 25241), (946, 22306), (1174, 17974), (1634, 12914), (1892, 11153), (2348, 8987), (3268, 6457)]