20218173625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1\times {\mathrm{2063}}^1$

素因数の和:2291

約数の個数: 64

約数和(自身を含む): 28092460032

約数和(自身を除く): 7874286407

約数列:

[1, 5, 13, 25, 37, 65, 125, 163, 185, 325, 481, 815, 925, 1625, 2063, 2119, 2405, 4075, 4625, 6031, 10315, 10595, 12025, 20375, 26819, 30155, 51575, 52975, 60125, 76331, 78403, 134095, 150775, 257875, 264875, 336269, 381655, 392015, 670475, 753875, 992303, 1681345, 1908275, 1960075, 3352375, 4371497, 4961515, 8406725, 9541375, 9800375, 12441953, 21857485, 24807575, 42033625, 62209765, 109287425, 124037875, 161745389, 311048825, 546437125, 808726945, 1555244125, 4043634725, 20218173625]

約数ペア:

[(1, 20218173625), (5, 4043634725), (13, 1555244125), (25, 808726945), (37, 546437125), (65, 311048825), (125, 161745389), (163, 124037875), (185, 109287425), (325, 62209765), (481, 42033625), (815, 24807575), (925, 21857485), (1625, 12441953), (2063, 9800375), (2119, 9541375), (2405, 8406725), (4075, 4961515), (4625, 4371497), (6031, 3352375), (10315, 1960075), (10595, 1908275), (12025, 1681345), (20375, 992303), (26819, 753875), (30155, 670475), (51575, 392015), (52975, 381655), (60125, 336269), (76331, 264875), (78403, 257875), (134095, 150775)]