31317780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40151}}^1$

素因数の和:40176

約数の個数: 48

約数和(自身を含む): 94437504

約数和(自身を除く): 63119724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 40151, 80302, 120453, 160604, 200755, 240906, 401510, 481812, 521963, 602265, 803020, 1043926, 1204530, 1565889, 2087852, 2409060, 2609815, 3131778, 5219630, 6263556, 7829445, 10439260, 15658890, 31317780]

約数ペア:

[(1, 31317780), (2, 15658890), (3, 10439260), (4, 7829445), (5, 6263556), (6, 5219630), (10, 3131778), (12, 2609815), (13, 2409060), (15, 2087852), (20, 1565889), (26, 1204530), (30, 1043926), (39, 803020), (52, 602265), (60, 521963), (65, 481812), (78, 401510), (130, 240906), (156, 200755), (195, 160604), (260, 120453), (390, 80302), (780, 40151)]