2509040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 40

約数和(自身を含む): 5922240

約数和(自身を除く): 3413200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 397, 632, 790, 794, 1264, 1580, 1588, 1985, 3160, 3176, 3970, 6320, 6352, 7940, 15880, 31363, 31760, 62726, 125452, 156815, 250904, 313630, 501808, 627260, 1254520, 2509040]

約数ペア:

[(1, 2509040), (2, 1254520), (4, 627260), (5, 501808), (8, 313630), (10, 250904), (16, 156815), (20, 125452), (40, 62726), (79, 31760), (80, 31363), (158, 15880), (316, 7940), (395, 6352), (397, 6320), (632, 3970), (790, 3176), (794, 3160), (1264, 1985), (1580, 1588)]