1991232080

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{653}}^1\times {\mathrm{811}}^1$

素因数の和:1524

約数の個数: 80

約数和(自身を含む): 4741196544

約数和(自身を除く): 2749964464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 653, 752, 811, 940, 1306, 1622, 1880, 2612, 3244, 3265, 3760, 4055, 5224, 6488, 6530, 8110, 10448, 12976, 13060, 16220, 26120, 30691, 32440, 38117, 52240, 61382, 64880, 76234, 122764, 152468, 153455, 190585, 245528, 304936, 306910, 381170, 491056, 529583, 609872, 613820, 762340, 1059166, 1227640, 1524680, 2118332, 2455280, 2647915, 3049360, 4236664, 5295830, 8473328, 10591660, 21183320, 24890401, 42366640, 49780802, 99561604, 124452005, 199123208, 248904010, 398246416, 497808020, 995616040, 1991232080]

約数ペア:

[(1, 1991232080), (2, 995616040), (4, 497808020), (5, 398246416), (8, 248904010), (10, 199123208), (16, 124452005), (20, 99561604), (40, 49780802), (47, 42366640), (80, 24890401), (94, 21183320), (188, 10591660), (235, 8473328), (376, 5295830), (470, 4236664), (653, 3049360), (752, 2647915), (811, 2455280), (940, 2118332), (1306, 1524680), (1622, 1227640), (1880, 1059166), (2612, 762340), (3244, 613820), (3265, 609872), (3760, 529583), (4055, 491056), (5224, 381170), (6488, 306910), (6530, 304936), (8110, 245528), (10448, 190585), (12976, 153455), (13060, 152468), (16220, 122764), (26120, 76234), (30691, 64880), (32440, 61382), (38117, 52240)]