20421428

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{1609}}^1$

素因数の和:1799

約数の個数: 24

約数和(自身を含む): 37867200

約数和(自身を除く): 17445772

約数列:

[1, 2, 4, 19, 38, 76, 167, 334, 668, 1609, 3173, 3218, 6346, 6436, 12692, 30571, 61142, 122284, 268703, 537406, 1074812, 5105357, 10210714, 20421428]

約数ペア:

[(1, 20421428), (2, 10210714), (4, 5105357), (19, 1074812), (38, 537406), (76, 268703), (167, 122284), (334, 61142), (668, 30571), (1609, 12692), (3173, 6436), (3218, 6346)]