18890010

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{23321}}^1$

素因数の和:23340

約数の個数: 40

約数和(自身を含む): 50795316

約数和(自身を除く): 31905306

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 23321, 46642, 69963, 116605, 139926, 209889, 233210, 349815, 419778, 629667, 699630, 1049445, 1259334, 1889001, 2098890, 3148335, 3778002, 6296670, 9445005, 18890010]

約数ペア:

[(1, 18890010), (2, 9445005), (3, 6296670), (5, 3778002), (6, 3148335), (9, 2098890), (10, 1889001), (15, 1259334), (18, 1049445), (27, 699630), (30, 629667), (45, 419778), (54, 349815), (81, 233210), (90, 209889), (135, 139926), (162, 116605), (270, 69963), (405, 46642), (810, 23321)]