25470020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 55566000

約数和(自身を除く): 30095980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 89, 164, 178, 205, 349, 356, 410, 445, 698, 820, 890, 1396, 1745, 1780, 3490, 3649, 6980, 7298, 14309, 14596, 18245, 28618, 31061, 36490, 57236, 62122, 71545, 72980, 124244, 143090, 155305, 286180, 310610, 621220, 1273501, 2547002, 5094004, 6367505, 12735010, 25470020]

約数ペア:

[(1, 25470020), (2, 12735010), (4, 6367505), (5, 5094004), (10, 2547002), (20, 1273501), (41, 621220), (82, 310610), (89, 286180), (164, 155305), (178, 143090), (205, 124244), (349, 72980), (356, 71545), (410, 62122), (445, 57236), (698, 36490), (820, 31061), (890, 28618), (1396, 18245), (1745, 14596), (1780, 14309), (3490, 7298), (3649, 6980)]