19907760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{761}}^1$

素因数の和:886

約数の個数: 80

約数和(自身を含む): 62362080

約数和(自身を除く): 42454320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 109, 120, 218, 240, 327, 436, 545, 654, 761, 872, 1090, 1308, 1522, 1635, 1744, 2180, 2283, 2616, 3044, 3270, 3805, 4360, 4566, 5232, 6088, 6540, 7610, 8720, 9132, 11415, 12176, 13080, 15220, 18264, 22830, 26160, 30440, 36528, 45660, 60880, 82949, 91320, 165898, 182640, 248847, 331796, 414745, 497694, 663592, 829490, 995388, 1244235, 1327184, 1658980, 1990776, 2488470, 3317960, 3981552, 4976940, 6635920, 9953880, 19907760]

約数ペア:

[(1, 19907760), (2, 9953880), (3, 6635920), (4, 4976940), (5, 3981552), (6, 3317960), (8, 2488470), (10, 1990776), (12, 1658980), (15, 1327184), (16, 1244235), (20, 995388), (24, 829490), (30, 663592), (40, 497694), (48, 414745), (60, 331796), (80, 248847), (109, 182640), (120, 165898), (218, 91320), (240, 82949), (327, 60880), (436, 45660), (545, 36528), (654, 30440), (761, 26160), (872, 22830), (1090, 18264), (1308, 15220), (1522, 13080), (1635, 12176), (1744, 11415), (2180, 9132), (2283, 8720), (2616, 7610), (3044, 6540), (3270, 6088), (3805, 5232), (4360, 4566)]