21780030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8747}}^1$

素因数の和:8840

約数の個数: 32

約数和(自身を含む): 52907904

約数和(自身を除く): 31127874

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 83, 166, 249, 415, 498, 830, 1245, 2490, 8747, 17494, 26241, 43735, 52482, 87470, 131205, 262410, 726001, 1452002, 2178003, 3630005, 4356006, 7260010, 10890015, 21780030]

約数ペア:

[(1, 21780030), (2, 10890015), (3, 7260010), (5, 4356006), (6, 3630005), (10, 2178003), (15, 1452002), (30, 726001), (83, 262410), (166, 131205), (249, 87470), (415, 52482), (498, 43735), (830, 26241), (1245, 17494), (2490, 8747)]