28525520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:492

約数の個数: 80

約数和(自身を含む): 71245440

約数和(自身を除く): 42719920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 37, 40, 46, 74, 80, 92, 115, 148, 184, 185, 230, 296, 368, 370, 419, 460, 592, 740, 838, 851, 920, 1480, 1676, 1702, 1840, 2095, 2960, 3352, 3404, 4190, 4255, 6704, 6808, 8380, 8510, 9637, 13616, 15503, 16760, 17020, 19274, 31006, 33520, 34040, 38548, 48185, 62012, 68080, 77096, 77515, 96370, 124024, 154192, 155030, 192740, 248048, 310060, 356569, 385480, 620120, 713138, 770960, 1240240, 1426276, 1782845, 2852552, 3565690, 5705104, 7131380, 14262760, 28525520]

約数ペア:

[(1, 28525520), (2, 14262760), (4, 7131380), (5, 5705104), (8, 3565690), (10, 2852552), (16, 1782845), (20, 1426276), (23, 1240240), (37, 770960), (40, 713138), (46, 620120), (74, 385480), (80, 356569), (92, 310060), (115, 248048), (148, 192740), (184, 155030), (185, 154192), (230, 124024), (296, 96370), (368, 77515), (370, 77096), (419, 68080), (460, 62012), (592, 48185), (740, 38548), (838, 34040), (851, 33520), (920, 31006), (1480, 19274), (1676, 17020), (1702, 16760), (1840, 15503), (2095, 13616), (2960, 9637), (3352, 8510), (3404, 8380), (4190, 6808), (4255, 6704)]