19664464

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{563}}^1$

素因数の和:667

約数の個数: 40

約数和(自身を含む): 39863520

約数和(自身を除く): 20199056

約数列:

[1, 2, 4, 8, 16, 37, 59, 74, 118, 148, 236, 296, 472, 563, 592, 944, 1126, 2183, 2252, 4366, 4504, 8732, 9008, 17464, 20831, 33217, 34928, 41662, 66434, 83324, 132868, 166648, 265736, 333296, 531472, 1229029, 2458058, 4916116, 9832232, 19664464]

約数ペア:

[(1, 19664464), (2, 9832232), (4, 4916116), (8, 2458058), (16, 1229029), (37, 531472), (59, 333296), (74, 265736), (118, 166648), (148, 132868), (236, 83324), (296, 66434), (472, 41662), (563, 34928), (592, 33217), (944, 20831), (1126, 17464), (2183, 9008), (2252, 8732), (4366, 4504)]