87727760

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17977}}^1$

素因数の和:18051

約数の個数: 40

約数和(自身を含む): 207322296

約数和(自身を除く): 119594536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 17977, 35954, 71908, 89885, 143816, 179770, 287632, 359540, 719080, 1096597, 1438160, 2193194, 4386388, 5482985, 8772776, 10965970, 17545552, 21931940, 43863880, 87727760]

約数ペア:

[(1, 87727760), (2, 43863880), (4, 21931940), (5, 17545552), (8, 10965970), (10, 8772776), (16, 5482985), (20, 4386388), (40, 2193194), (61, 1438160), (80, 1096597), (122, 719080), (244, 359540), (305, 287632), (488, 179770), (610, 143816), (976, 89885), (1220, 71908), (2440, 35954), (4880, 17977)]