18180820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7639}}^1$

素因数の和:7672

約数の個数: 48

約数和(自身を含む): 46206720

約数和(自身を除く): 28025900

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 7639, 15278, 30556, 38195, 53473, 76390, 106946, 129863, 152780, 213892, 259726, 267365, 519452, 534730, 649315, 909041, 1069460, 1298630, 1818082, 2597260, 3636164, 4545205, 9090410, 18180820]

約数ペア:

[(1, 18180820), (2, 9090410), (4, 4545205), (5, 3636164), (7, 2597260), (10, 1818082), (14, 1298630), (17, 1069460), (20, 909041), (28, 649315), (34, 534730), (35, 519452), (68, 267365), (70, 259726), (85, 213892), (119, 152780), (140, 129863), (170, 106946), (238, 76390), (340, 53473), (476, 38195), (595, 30556), (1190, 15278), (2380, 7639)]