20676080

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:714

約数の個数: 80

約数和(自身を含む): 53193024

約数和(自身を除く): 32516944

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 661, 680, 782, 920, 1322, 1360, 1564, 1840, 1955, 2644, 3128, 3305, 3910, 5288, 6256, 6610, 7820, 10576, 11237, 13220, 15203, 15640, 22474, 26440, 30406, 31280, 44948, 52880, 56185, 60812, 76015, 89896, 112370, 121624, 152030, 179792, 224740, 243248, 258451, 304060, 449480, 516902, 608120, 898960, 1033804, 1216240, 1292255, 2067608, 2584510, 4135216, 5169020, 10338040, 20676080]

約数ペア:

[(1, 20676080), (2, 10338040), (4, 5169020), (5, 4135216), (8, 2584510), (10, 2067608), (16, 1292255), (17, 1216240), (20, 1033804), (23, 898960), (34, 608120), (40, 516902), (46, 449480), (68, 304060), (80, 258451), (85, 243248), (92, 224740), (115, 179792), (136, 152030), (170, 121624), (184, 112370), (230, 89896), (272, 76015), (340, 60812), (368, 56185), (391, 52880), (460, 44948), (661, 31280), (680, 30406), (782, 26440), (920, 22474), (1322, 15640), (1360, 15203), (1564, 13220), (1840, 11237), (1955, 10576), (2644, 7820), (3128, 6610), (3305, 6256), (3910, 5288)]