2421380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 5597760

約数和(自身を除く): 3176380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 139, 260, 268, 278, 335, 556, 670, 695, 871, 1340, 1390, 1742, 1807, 2780, 3484, 3614, 4355, 7228, 8710, 9035, 9313, 17420, 18070, 18626, 36140, 37252, 46565, 93130, 121069, 186260, 242138, 484276, 605345, 1210690, 2421380]

約数ペア:

[(1, 2421380), (2, 1210690), (4, 605345), (5, 484276), (10, 242138), (13, 186260), (20, 121069), (26, 93130), (52, 46565), (65, 37252), (67, 36140), (130, 18626), (134, 18070), (139, 17420), (260, 9313), (268, 9035), (278, 8710), (335, 7228), (556, 4355), (670, 3614), (695, 3484), (871, 2780), (1340, 1807), (1390, 1742)]