19938880

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4793}}^1$

素因数の和:4823

約数の個数: 56

約数和(自身を含む): 51142392

約数和(自身を除く): 31203512

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4793, 9586, 19172, 23965, 38344, 47930, 62309, 76688, 95860, 124618, 153376, 191720, 249236, 306752, 311545, 383440, 498472, 623090, 766880, 996944, 1246180, 1533760, 1993888, 2492360, 3987776, 4984720, 9969440, 19938880]

約数ペア:

[(1, 19938880), (2, 9969440), (4, 4984720), (5, 3987776), (8, 2492360), (10, 1993888), (13, 1533760), (16, 1246180), (20, 996944), (26, 766880), (32, 623090), (40, 498472), (52, 383440), (64, 311545), (65, 306752), (80, 249236), (104, 191720), (130, 153376), (160, 124618), (208, 95860), (260, 76688), (320, 62309), (416, 47930), (520, 38344), (832, 23965), (1040, 19172), (2080, 9586), (4160, 4793)]