1287595420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{22741}}^1$

素因数の和:22918

約数の個数: 48

約数和(自身を含む): 2865492000

約数和(自身を除く): 1577896580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 149, 190, 298, 380, 596, 745, 1490, 2831, 2980, 5662, 11324, 14155, 22741, 28310, 45482, 56620, 90964, 113705, 227410, 432079, 454820, 864158, 1728316, 2160395, 3388409, 4320790, 6776818, 8641580, 13553636, 16942045, 33884090, 64379771, 67768180, 128759542, 257519084, 321898855, 643797710, 1287595420]

約数ペア:

[(1, 1287595420), (2, 643797710), (4, 321898855), (5, 257519084), (10, 128759542), (19, 67768180), (20, 64379771), (38, 33884090), (76, 16942045), (95, 13553636), (149, 8641580), (190, 6776818), (298, 4320790), (380, 3388409), (596, 2160395), (745, 1728316), (1490, 864158), (2831, 454820), (2980, 432079), (5662, 227410), (11324, 113705), (14155, 90964), (22741, 56620), (28310, 45482)]