21172194

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2055

約数の個数: 48

約数和(自身を含む): 49870080

約数和(自身を除く): 28697886

約数列:

[1, 2, 3, 6, 9, 18, 19, 31, 38, 57, 62, 93, 114, 171, 186, 279, 342, 558, 589, 1178, 1767, 1997, 3534, 3994, 5301, 5991, 10602, 11982, 17973, 35946, 37943, 61907, 75886, 113829, 123814, 185721, 227658, 341487, 371442, 557163, 682974, 1114326, 1176233, 2352466, 3528699, 7057398, 10586097, 21172194]

約数ペア:

[(1, 21172194), (2, 10586097), (3, 7057398), (6, 3528699), (9, 2352466), (18, 1176233), (19, 1114326), (31, 682974), (38, 557163), (57, 371442), (62, 341487), (93, 227658), (114, 185721), (171, 123814), (186, 113829), (279, 75886), (342, 61907), (558, 37943), (589, 35946), (1178, 17973), (1767, 11982), (1997, 10602), (3534, 5991), (3994, 5301)]