978996880

素因数分解:

$2^4\times 5^1\times {\mathrm{1913}}^1\times {\mathrm{6397}}^1$

素因数の和:8323

約数の個数: 40

約数和(自身を含む): 2277713592

約数和(自身を除く): 1298716712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1913, 3826, 6397, 7652, 9565, 12794, 15304, 19130, 25588, 30608, 31985, 38260, 51176, 63970, 76520, 102352, 127940, 153040, 255880, 511760, 12237461, 24474922, 48949844, 61187305, 97899688, 122374610, 195799376, 244749220, 489498440, 978996880]

約数ペア:

[(1, 978996880), (2, 489498440), (4, 244749220), (5, 195799376), (8, 122374610), (10, 97899688), (16, 61187305), (20, 48949844), (40, 24474922), (80, 12237461), (1913, 511760), (3826, 255880), (6397, 153040), (7652, 127940), (9565, 102352), (12794, 76520), (15304, 63970), (19130, 51176), (25588, 38260), (30608, 31985)]