408660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{139}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 1340640

約数和(自身を除く): 931980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 139, 140, 147, 196, 210, 245, 278, 294, 417, 420, 490, 556, 588, 695, 735, 834, 973, 980, 1390, 1470, 1668, 1946, 2085, 2780, 2919, 2940, 3892, 4170, 4865, 5838, 6811, 8340, 9730, 11676, 13622, 14595, 19460, 20433, 27244, 29190, 34055, 40866, 58380, 68110, 81732, 102165, 136220, 204330, 408660]

約数ペア:

[(1, 408660), (2, 204330), (3, 136220), (4, 102165), (5, 81732), (6, 68110), (7, 58380), (10, 40866), (12, 34055), (14, 29190), (15, 27244), (20, 20433), (21, 19460), (28, 14595), (30, 13622), (35, 11676), (42, 9730), (49, 8340), (60, 6811), (70, 5838), (84, 4865), (98, 4170), (105, 3892), (139, 2940), (140, 2919), (147, 2780), (196, 2085), (210, 1946), (245, 1668), (278, 1470), (294, 1390), (417, 980), (420, 973), (490, 834), (556, 735), (588, 695)]