19318780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1109}}^1$

素因数の和:1198

約数の個数: 48

約数和(自身を含む): 44382240

約数和(自身を除く): 25063460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 335, 670, 871, 1109, 1340, 1742, 2218, 3484, 4355, 4436, 5545, 8710, 11090, 14417, 17420, 22180, 28834, 57668, 72085, 74303, 144170, 148606, 288340, 297212, 371515, 743030, 965939, 1486060, 1931878, 3863756, 4829695, 9659390, 19318780]

約数ペア:

[(1, 19318780), (2, 9659390), (4, 4829695), (5, 3863756), (10, 1931878), (13, 1486060), (20, 965939), (26, 743030), (52, 371515), (65, 297212), (67, 288340), (130, 148606), (134, 144170), (260, 74303), (268, 72085), (335, 57668), (670, 28834), (871, 22180), (1109, 17420), (1340, 14417), (1742, 11090), (2218, 8710), (3484, 5545), (4355, 4436)]