128878160

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:532

約数の個数: 80

約数和(自身を含む): 312218112

約数和(自身を除く): 183339952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 157, 248, 310, 314, 331, 496, 620, 628, 662, 785, 1240, 1256, 1324, 1570, 1655, 2480, 2512, 2648, 3140, 3310, 4867, 5296, 6280, 6620, 9734, 10261, 12560, 13240, 19468, 20522, 24335, 26480, 38936, 41044, 48670, 51305, 51967, 77872, 82088, 97340, 102610, 103934, 164176, 194680, 205220, 207868, 259835, 389360, 410440, 415736, 519670, 820880, 831472, 1039340, 1610977, 2078680, 3221954, 4157360, 6443908, 8054885, 12887816, 16109770, 25775632, 32219540, 64439080, 128878160]

約数ペア:

[(1, 128878160), (2, 64439080), (4, 32219540), (5, 25775632), (8, 16109770), (10, 12887816), (16, 8054885), (20, 6443908), (31, 4157360), (40, 3221954), (62, 2078680), (80, 1610977), (124, 1039340), (155, 831472), (157, 820880), (248, 519670), (310, 415736), (314, 410440), (331, 389360), (496, 259835), (620, 207868), (628, 205220), (662, 194680), (785, 164176), (1240, 103934), (1256, 102610), (1324, 97340), (1570, 82088), (1655, 77872), (2480, 51967), (2512, 51305), (2648, 48670), (3140, 41044), (3310, 38936), (4867, 26480), (5296, 24335), (6280, 20522), (6620, 19468), (9734, 13240), (10261, 12560)]