18973760

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4561}}^1$

素因数の和:4591

約数の個数: 56

約数和(自身を含む): 48667416

約数和(自身を除く): 29693656

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, 4561, 9122, 18244, 22805, 36488, 45610, 59293, 72976, 91220, 118586, 145952, 182440, 237172, 291904, 296465, 364880, 474344, 592930, 729760, 948688, 1185860, 1459520, 1897376, 2371720, 3794752, 4743440, 9486880, 18973760]

約数ペア:

[(1, 18973760), (2, 9486880), (4, 4743440), (5, 3794752), (8, 2371720), (10, 1897376), (13, 1459520), (16, 1185860), (20, 948688), (26, 729760), (32, 592930), (40, 474344), (52, 364880), (64, 296465), (65, 291904), (80, 237172), (104, 182440), (130, 145952), (160, 118586), (208, 91220), (260, 72976), (320, 59293), (416, 45610), (520, 36488), (832, 22805), (1040, 18244), (2080, 9122), (4160, 4561)]