21870700

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 51059232

約数和(自身を除く): 29188532

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 37, 46, 50, 74, 92, 100, 115, 148, 185, 230, 257, 370, 460, 514, 575, 740, 851, 925, 1028, 1150, 1285, 1702, 1850, 2300, 2570, 3404, 3700, 4255, 5140, 5911, 6425, 8510, 9509, 11822, 12850, 17020, 19018, 21275, 23644, 25700, 29555, 38036, 42550, 47545, 59110, 85100, 95090, 118220, 147775, 190180, 218707, 237725, 295550, 437414, 475450, 591100, 874828, 950900, 1093535, 2187070, 4374140, 5467675, 10935350, 21870700]

約数ペア:

[(1, 21870700), (2, 10935350), (4, 5467675), (5, 4374140), (10, 2187070), (20, 1093535), (23, 950900), (25, 874828), (37, 591100), (46, 475450), (50, 437414), (74, 295550), (92, 237725), (100, 218707), (115, 190180), (148, 147775), (185, 118220), (230, 95090), (257, 85100), (370, 59110), (460, 47545), (514, 42550), (575, 38036), (740, 29555), (851, 25700), (925, 23644), (1028, 21275), (1150, 19018), (1285, 17020), (1702, 12850), (1850, 11822), (2300, 9509), (2570, 8510), (3404, 6425), (3700, 5911), (4255, 5140)]