18991230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 28908930

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 83, 87, 145, 166, 174, 249, 263, 290, 415, 435, 498, 526, 789, 830, 870, 1245, 1315, 1578, 2407, 2490, 2630, 3945, 4814, 7221, 7627, 7890, 12035, 14442, 15254, 21829, 22881, 24070, 36105, 38135, 43658, 45762, 65487, 72210, 76270, 109145, 114405, 130974, 218290, 228810, 327435, 633041, 654870, 1266082, 1899123, 3165205, 3798246, 6330410, 9495615, 18991230]

約数ペア:

[(1, 18991230), (2, 9495615), (3, 6330410), (5, 3798246), (6, 3165205), (10, 1899123), (15, 1266082), (29, 654870), (30, 633041), (58, 327435), (83, 228810), (87, 218290), (145, 130974), (166, 114405), (174, 109145), (249, 76270), (263, 72210), (290, 65487), (415, 45762), (435, 43658), (498, 38135), (526, 36105), (789, 24070), (830, 22881), (870, 21829), (1245, 15254), (1315, 14442), (1578, 12035), (2407, 7890), (2490, 7627), (2630, 7221), (3945, 4814)]