4990020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^2$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 16115904

約数和(自身を除く): 11125884

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 109, 140, 210, 218, 327, 420, 436, 545, 654, 763, 1090, 1308, 1526, 1635, 2180, 2289, 3052, 3270, 3815, 4578, 6540, 7630, 9156, 11445, 11881, 15260, 22890, 23762, 35643, 45780, 47524, 59405, 71286, 83167, 118810, 142572, 166334, 178215, 237620, 249501, 332668, 356430, 415835, 499002, 712860, 831670, 998004, 1247505, 1663340, 2495010, 4990020]

約数ペア:

[(1, 4990020), (2, 2495010), (3, 1663340), (4, 1247505), (5, 998004), (6, 831670), (7, 712860), (10, 499002), (12, 415835), (14, 356430), (15, 332668), (20, 249501), (21, 237620), (28, 178215), (30, 166334), (35, 142572), (42, 118810), (60, 83167), (70, 71286), (84, 59405), (105, 47524), (109, 45780), (140, 35643), (210, 23762), (218, 22890), (327, 15260), (420, 11881), (436, 11445), (545, 9156), (654, 7630), (763, 6540), (1090, 4578), (1308, 3815), (1526, 3270), (1635, 3052), (2180, 2289)]