20048340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25703}}^1$

素因数の和:25728

約数の個数: 48

約数和(自身を含む): 60455808

約数和(自身を除く): 40407468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25703, 51406, 77109, 102812, 128515, 154218, 257030, 308436, 334139, 385545, 514060, 668278, 771090, 1002417, 1336556, 1542180, 1670695, 2004834, 3341390, 4009668, 5012085, 6682780, 10024170, 20048340]

約数ペア:

[(1, 20048340), (2, 10024170), (3, 6682780), (4, 5012085), (5, 4009668), (6, 3341390), (10, 2004834), (12, 1670695), (13, 1542180), (15, 1336556), (20, 1002417), (26, 771090), (30, 668278), (39, 514060), (52, 385545), (60, 334139), (65, 308436), (78, 257030), (130, 154218), (156, 128515), (195, 102812), (260, 77109), (390, 51406), (780, 25703)]