207880020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{128321}}^1$

素因数の和:128342

約数の個数: 60

約数和(自身を含む): 652132404

約数和(自身を除く): 444252384

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 128321, 256642, 384963, 513284, 641605, 769926, 1154889, 1283210, 1539852, 1924815, 2309778, 2566420, 3464667, 3849630, 4619556, 5774445, 6929334, 7699260, 10394001, 11548890, 13858668, 17323335, 20788002, 23097780, 34646670, 41576004, 51970005, 69293340, 103940010, 207880020]

約数ペア:

[(1, 207880020), (2, 103940010), (3, 69293340), (4, 51970005), (5, 41576004), (6, 34646670), (9, 23097780), (10, 20788002), (12, 17323335), (15, 13858668), (18, 11548890), (20, 10394001), (27, 7699260), (30, 6929334), (36, 5774445), (45, 4619556), (54, 3849630), (60, 3464667), (81, 2566420), (90, 2309778), (108, 1924815), (135, 1539852), (162, 1283210), (180, 1154889), (270, 769926), (324, 641605), (405, 513284), (540, 384963), (810, 256642), (1620, 128321)]