216868988

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{209333}}^1$

素因数の和:209381

約数の個数: 24

約数和(自身を含む): 445462752

約数和(自身を除く): 228593764

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 209333, 418666, 837332, 1465331, 2930662, 5861324, 7745321, 15490642, 30981284, 54217247, 108434494, 216868988]

約数ペア:

[(1, 216868988), (2, 108434494), (4, 54217247), (7, 30981284), (14, 15490642), (28, 7745321), (37, 5861324), (74, 2930662), (148, 1465331), (259, 837332), (518, 418666), (1036, 209333)]