219149950

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:709

約数の個数: 48

約数和(自身を含む): 417384000

約数和(自身を除く): 198234050

約数列:

[1, 2, 5, 10, 25, 50, 79, 109, 158, 218, 395, 509, 545, 790, 1018, 1090, 1975, 2545, 2725, 3950, 5090, 5450, 8611, 12725, 17222, 25450, 40211, 43055, 55481, 80422, 86110, 110962, 201055, 215275, 277405, 402110, 430550, 554810, 1005275, 1387025, 2010550, 2774050, 4382999, 8765998, 21914995, 43829990, 109574975, 219149950]

約数ペア:

[(1, 219149950), (2, 109574975), (5, 43829990), (10, 21914995), (25, 8765998), (50, 4382999), (79, 2774050), (109, 2010550), (158, 1387025), (218, 1005275), (395, 554810), (509, 430550), (545, 402110), (790, 277405), (1018, 215275), (1090, 201055), (1975, 110962), (2545, 86110), (2725, 80422), (3950, 55481), (5090, 43055), (5450, 40211), (8611, 25450), (12725, 17222)]