18391380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43789}}^1$

素因数の和:43808

約数の個数: 48

約数和(自身を含む): 58853760

約数和(自身を除く): 40462380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43789, 87578, 131367, 175156, 218945, 262734, 306523, 437890, 525468, 613046, 656835, 875780, 919569, 1226092, 1313670, 1532615, 1839138, 2627340, 3065230, 3678276, 4597845, 6130460, 9195690, 18391380]

約数ペア:

[(1, 18391380), (2, 9195690), (3, 6130460), (4, 4597845), (5, 3678276), (6, 3065230), (7, 2627340), (10, 1839138), (12, 1532615), (14, 1313670), (15, 1226092), (20, 919569), (21, 875780), (28, 656835), (30, 613046), (35, 525468), (42, 437890), (60, 306523), (70, 262734), (84, 218945), (105, 175156), (140, 131367), (210, 87578), (420, 43789)]