20688210

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25541}}^1$

素因数の和:25560

約数の個数: 40

約数和(自身を含む): 55630476

約数和(自身を除く): 34942266

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25541, 51082, 76623, 127705, 153246, 229869, 255410, 383115, 459738, 689607, 766230, 1149345, 1379214, 2068821, 2298690, 3448035, 4137642, 6896070, 10344105, 20688210]

約数ペア:

[(1, 20688210), (2, 10344105), (3, 6896070), (5, 4137642), (6, 3448035), (9, 2298690), (10, 2068821), (15, 1379214), (18, 1149345), (27, 766230), (30, 689607), (45, 459738), (54, 383115), (81, 255410), (90, 229869), (135, 153246), (162, 127705), (270, 76623), (405, 51082), (810, 25541)]