2019988750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{631}}^1$

素因数の和:863

約数の個数: 80

約数和(自身を含む): 4104711072

約数和(自身を除く): 2084722322

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 197, 250, 325, 394, 625, 631, 650, 985, 1250, 1262, 1625, 1970, 2561, 3155, 3250, 4925, 5122, 6310, 8125, 8203, 9850, 12805, 15775, 16250, 16406, 24625, 25610, 31550, 41015, 49250, 64025, 78875, 82030, 123125, 124307, 128050, 157750, 205075, 246250, 248614, 320125, 394375, 410150, 621535, 640250, 788750, 1025375, 1243070, 1600625, 1615991, 2050750, 3107675, 3201250, 3231982, 5126875, 6215350, 8079955, 10253750, 15538375, 16159910, 31076750, 40399775, 77691875, 80799550, 155383750, 201998875, 403997750, 1009994375, 2019988750]

約数ペア:

[(1, 2019988750), (2, 1009994375), (5, 403997750), (10, 201998875), (13, 155383750), (25, 80799550), (26, 77691875), (50, 40399775), (65, 31076750), (125, 16159910), (130, 15538375), (197, 10253750), (250, 8079955), (325, 6215350), (394, 5126875), (625, 3231982), (631, 3201250), (650, 3107675), (985, 2050750), (1250, 1615991), (1262, 1600625), (1625, 1243070), (1970, 1025375), (2561, 788750), (3155, 640250), (3250, 621535), (4925, 410150), (5122, 394375), (6310, 320125), (8125, 248614), (8203, 246250), (9850, 205075), (12805, 157750), (15775, 128050), (16250, 124307), (16406, 123125), (24625, 82030), (25610, 78875), (31550, 64025), (41015, 49250)]