21286366928

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{143687}}^1$

素因数の和:143939

約数の個数: 40

約数和(自身を含む): 42333933312

約数和(自身を除く): 21047566384

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 197, 376, 394, 752, 788, 1576, 3152, 9259, 18518, 37036, 74072, 143687, 148144, 287374, 574748, 1149496, 2298992, 6753289, 13506578, 27013156, 28306339, 54026312, 56612678, 108052624, 113225356, 226450712, 452901424, 1330397933, 2660795866, 5321591732, 10643183464, 21286366928]

約数ペア:

[(1, 21286366928), (2, 10643183464), (4, 5321591732), (8, 2660795866), (16, 1330397933), (47, 452901424), (94, 226450712), (188, 113225356), (197, 108052624), (376, 56612678), (394, 54026312), (752, 28306339), (788, 27013156), (1576, 13506578), (3152, 6753289), (9259, 2298992), (18518, 1149496), (37036, 574748), (74072, 287374), (143687, 148144)]