28976620

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 62657280

約数和(自身を除く): 33680660

約数列:

[1, 2, 4, 5, 10, 20, 73, 89, 146, 178, 223, 292, 356, 365, 445, 446, 730, 890, 892, 1115, 1460, 1780, 2230, 4460, 6497, 12994, 16279, 19847, 25988, 32485, 32558, 39694, 64970, 65116, 79388, 81395, 99235, 129940, 162790, 198470, 325580, 396940, 1448831, 2897662, 5795324, 7244155, 14488310, 28976620]

約数ペア:

[(1, 28976620), (2, 14488310), (4, 7244155), (5, 5795324), (10, 2897662), (20, 1448831), (73, 396940), (89, 325580), (146, 198470), (178, 162790), (223, 129940), (292, 99235), (356, 81395), (365, 79388), (445, 65116), (446, 64970), (730, 39694), (890, 32558), (892, 32485), (1115, 25988), (1460, 19847), (1780, 16279), (2230, 12994), (4460, 6497)]