19155320

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:524

約数の個数: 64

約数和(自身を含む): 46033920

約数和(自身を除く): 26878600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 92, 94, 115, 184, 188, 230, 235, 376, 443, 460, 470, 886, 920, 940, 1081, 1772, 1880, 2162, 2215, 3544, 4324, 4430, 5405, 8648, 8860, 10189, 10810, 17720, 20378, 20821, 21620, 40756, 41642, 43240, 50945, 81512, 83284, 101890, 104105, 166568, 203780, 208210, 407560, 416420, 478883, 832840, 957766, 1915532, 2394415, 3831064, 4788830, 9577660, 19155320]

約数ペア:

[(1, 19155320), (2, 9577660), (4, 4788830), (5, 3831064), (8, 2394415), (10, 1915532), (20, 957766), (23, 832840), (40, 478883), (46, 416420), (47, 407560), (92, 208210), (94, 203780), (115, 166568), (184, 104105), (188, 101890), (230, 83284), (235, 81512), (376, 50945), (443, 43240), (460, 41642), (470, 40756), (886, 21620), (920, 20821), (940, 20378), (1081, 17720), (1772, 10810), (1880, 10189), (2162, 8860), (2215, 8648), (3544, 5405), (4324, 4430)]