18635805

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:179

約数の個数: 64

約数和(自身を含む): 35235840

約数和(自身を除く): 16600035

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 61, 73, 93, 135, 155, 183, 219, 279, 305, 365, 465, 549, 657, 837, 915, 1095, 1395, 1647, 1891, 1971, 2263, 2745, 3285, 4185, 4453, 5673, 6789, 8235, 9455, 9855, 11315, 13359, 17019, 20367, 22265, 28365, 33945, 40077, 51057, 61101, 66795, 85095, 101835, 120231, 138043, 200385, 255285, 305505, 414129, 601155, 690215, 1242387, 2070645, 3727161, 6211935, 18635805]

約数ペア:

[(1, 18635805), (3, 6211935), (5, 3727161), (9, 2070645), (15, 1242387), (27, 690215), (31, 601155), (45, 414129), (61, 305505), (73, 255285), (93, 200385), (135, 138043), (155, 120231), (183, 101835), (219, 85095), (279, 66795), (305, 61101), (365, 51057), (465, 40077), (549, 33945), (657, 28365), (837, 22265), (915, 20367), (1095, 17019), (1395, 13359), (1647, 11315), (1891, 9855), (1971, 9455), (2263, 8235), (2745, 6789), (3285, 5673), (4185, 4453)]