18890144

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^2\times {\mathrm{499}}^1$

素因数の和:542

約数の個数: 72

約数和(自身を含む): 46116000

約数和(自身を除く): 27225856

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 169, 182, 208, 224, 338, 364, 416, 499, 676, 728, 998, 1183, 1352, 1456, 1996, 2366, 2704, 2912, 3493, 3992, 4732, 5408, 6487, 6986, 7984, 9464, 12974, 13972, 15968, 18928, 25948, 27944, 37856, 45409, 51896, 55888, 84331, 90818, 103792, 111776, 168662, 181636, 207584, 337324, 363272, 590317, 674648, 726544, 1180634, 1349296, 1453088, 2361268, 2698592, 4722536, 9445072, 18890144]

約数ペア:

[(1, 18890144), (2, 9445072), (4, 4722536), (7, 2698592), (8, 2361268), (13, 1453088), (14, 1349296), (16, 1180634), (26, 726544), (28, 674648), (32, 590317), (52, 363272), (56, 337324), (91, 207584), (104, 181636), (112, 168662), (169, 111776), (182, 103792), (208, 90818), (224, 84331), (338, 55888), (364, 51896), (416, 45409), (499, 37856), (676, 27944), (728, 25948), (998, 18928), (1183, 15968), (1352, 13972), (1456, 12974), (1996, 9464), (2366, 7984), (2704, 6986), (2912, 6487), (3493, 5408), (3992, 4732)]