78981040

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12497}}^1$

素因数の和:12589

約数の個数: 40

約数和(自身を含む): 185970240

約数和(自身を除く): 106989200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 12497, 24994, 49988, 62485, 99976, 124970, 199952, 249940, 499880, 987263, 999760, 1974526, 3949052, 4936315, 7898104, 9872630, 15796208, 19745260, 39490520, 78981040]

約数ペア:

[(1, 78981040), (2, 39490520), (4, 19745260), (5, 15796208), (8, 9872630), (10, 7898104), (16, 4936315), (20, 3949052), (40, 1974526), (79, 999760), (80, 987263), (158, 499880), (316, 249940), (395, 199952), (632, 124970), (790, 99976), (1264, 62485), (1580, 49988), (3160, 24994), (6320, 12497)]