21220444

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{397}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 44932608

約数和(自身を除く): 23712164

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 83, 92, 161, 166, 322, 332, 397, 581, 644, 794, 1162, 1588, 1909, 2324, 2779, 3818, 5558, 7636, 9131, 11116, 13363, 18262, 26726, 32951, 36524, 53452, 63917, 65902, 127834, 131804, 230657, 255668, 461314, 757873, 922628, 1515746, 3031492, 5305111, 10610222, 21220444]

約数ペア:

[(1, 21220444), (2, 10610222), (4, 5305111), (7, 3031492), (14, 1515746), (23, 922628), (28, 757873), (46, 461314), (83, 255668), (92, 230657), (161, 131804), (166, 127834), (322, 65902), (332, 63917), (397, 53452), (581, 36524), (644, 32951), (794, 26726), (1162, 18262), (1588, 13363), (1909, 11116), (2324, 9131), (2779, 7636), (3818, 5558)]