20153940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1307}}^1$

素因数の和:1576

約数の個数: 48

約数和(自身を含む): 56693952

約数和(自身を除く): 36540012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1285, 1307, 1542, 2570, 2614, 3084, 3855, 3921, 5140, 5228, 6535, 7710, 7842, 13070, 15420, 15684, 19605, 26140, 39210, 78420, 335899, 671798, 1007697, 1343596, 1679495, 2015394, 3358990, 4030788, 5038485, 6717980, 10076970, 20153940]

約数ペア:

[(1, 20153940), (2, 10076970), (3, 6717980), (4, 5038485), (5, 4030788), (6, 3358990), (10, 2015394), (12, 1679495), (15, 1343596), (20, 1007697), (30, 671798), (60, 335899), (257, 78420), (514, 39210), (771, 26140), (1028, 19605), (1285, 15684), (1307, 15420), (1542, 13070), (2570, 7842), (2614, 7710), (3084, 6535), (3855, 5228), (3921, 5140)]