19986688

素因数分解:

$2^8\times {\mathrm{101}}^1\times {\mathrm{773}}^1$

素因数の和:890

約数の個数: 36

約数和(自身を含む): 40342428

約数和(自身を除く): 20355740

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 256, 404, 773, 808, 1546, 1616, 3092, 3232, 6184, 6464, 12368, 12928, 24736, 25856, 49472, 78073, 98944, 156146, 197888, 312292, 624584, 1249168, 2498336, 4996672, 9993344, 19986688]

約数ペア:

[(1, 19986688), (2, 9993344), (4, 4996672), (8, 2498336), (16, 1249168), (32, 624584), (64, 312292), (101, 197888), (128, 156146), (202, 98944), (256, 78073), (404, 49472), (773, 25856), (808, 24736), (1546, 12928), (1616, 12368), (3092, 6464), (3232, 6184)]