85490120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{571}}^1$

素因数の和:798

約数の個数: 64

約数和(自身を含む): 203860800

約数和(自身を除く): 118370680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 197, 380, 394, 571, 760, 788, 985, 1142, 1576, 1970, 2284, 2855, 3743, 3940, 4568, 5710, 7486, 7880, 10849, 11420, 14972, 18715, 21698, 22840, 29944, 37430, 43396, 54245, 74860, 86792, 108490, 112487, 149720, 216980, 224974, 433960, 449948, 562435, 899896, 1124870, 2137253, 2249740, 4274506, 4499480, 8549012, 10686265, 17098024, 21372530, 42745060, 85490120]

約数ペア:

[(1, 85490120), (2, 42745060), (4, 21372530), (5, 17098024), (8, 10686265), (10, 8549012), (19, 4499480), (20, 4274506), (38, 2249740), (40, 2137253), (76, 1124870), (95, 899896), (152, 562435), (190, 449948), (197, 433960), (380, 224974), (394, 216980), (571, 149720), (760, 112487), (788, 108490), (985, 86792), (1142, 74860), (1576, 54245), (1970, 43396), (2284, 37430), (2855, 29944), (3743, 22840), (3940, 21698), (4568, 18715), (5710, 14972), (7486, 11420), (7880, 10849)]