40490008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{617}}^1\times {\mathrm{631}}^1$

素因数の和:1267

約数の個数: 32

約数和(自身を含む): 82020960

約数和(自身を除く): 41530952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 617, 631, 1234, 1262, 2468, 2524, 4936, 5048, 8021, 8203, 16042, 16406, 32084, 32812, 64168, 65624, 389327, 778654, 1557308, 3114616, 5061251, 10122502, 20245004, 40490008]

約数ペア:

[(1, 40490008), (2, 20245004), (4, 10122502), (8, 5061251), (13, 3114616), (26, 1557308), (52, 778654), (104, 389327), (617, 65624), (631, 64168), (1234, 32812), (1262, 32084), (2468, 16406), (2524, 16042), (4936, 8203), (5048, 8021)]