21223456

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{521}}^1$

素因数の和:617

約数の個数: 48

約数和(自身を含む): 44724960

約数和(自身を除く): 23501504

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 67, 76, 134, 152, 268, 304, 521, 536, 608, 1042, 1072, 1273, 2084, 2144, 2546, 4168, 5092, 8336, 9899, 10184, 16672, 19798, 20368, 34907, 39596, 40736, 69814, 79192, 139628, 158384, 279256, 316768, 558512, 663233, 1117024, 1326466, 2652932, 5305864, 10611728, 21223456]

約数ペア:

[(1, 21223456), (2, 10611728), (4, 5305864), (8, 2652932), (16, 1326466), (19, 1117024), (32, 663233), (38, 558512), (67, 316768), (76, 279256), (134, 158384), (152, 139628), (268, 79192), (304, 69814), (521, 40736), (536, 39596), (608, 34907), (1042, 20368), (1072, 19798), (1273, 16672), (2084, 10184), (2144, 9899), (2546, 8336), (4168, 5092)]