27863140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{181}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 60540480

約数和(自身を除く): 32677340

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 179, 181, 215, 358, 362, 430, 716, 724, 860, 895, 905, 1790, 1810, 3580, 3620, 7697, 7783, 15394, 15566, 30788, 31132, 32399, 38485, 38915, 64798, 76970, 77830, 129596, 153940, 155660, 161995, 323990, 647980, 1393157, 2786314, 5572628, 6965785, 13931570, 27863140]

約数ペア:

[(1, 27863140), (2, 13931570), (4, 6965785), (5, 5572628), (10, 2786314), (20, 1393157), (43, 647980), (86, 323990), (172, 161995), (179, 155660), (181, 153940), (215, 129596), (358, 77830), (362, 76970), (430, 64798), (716, 38915), (724, 38485), (860, 32399), (895, 31132), (905, 30788), (1790, 15566), (1810, 15394), (3580, 7783), (3620, 7697)]