20405028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{577}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 54637184

約数和(自身を除く): 34232156

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 421, 577, 842, 1154, 1263, 1684, 1731, 2308, 2526, 2947, 3462, 4039, 5052, 5894, 6924, 8078, 8841, 11788, 12117, 16156, 17682, 24234, 35364, 48468, 242917, 485834, 728751, 971668, 1457502, 1700419, 2915004, 3400838, 5101257, 6801676, 10202514, 20405028]

約数ペア:

[(1, 20405028), (2, 10202514), (3, 6801676), (4, 5101257), (6, 3400838), (7, 2915004), (12, 1700419), (14, 1457502), (21, 971668), (28, 728751), (42, 485834), (84, 242917), (421, 48468), (577, 35364), (842, 24234), (1154, 17682), (1263, 16156), (1684, 12117), (1731, 11788), (2308, 8841), (2526, 8078), (2947, 6924), (3462, 5894), (4039, 5052)]