21639270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 53913600

約数和(自身を除く): 32274330

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 94, 103, 141, 149, 206, 235, 282, 298, 309, 447, 470, 515, 618, 705, 745, 894, 1030, 1410, 1490, 1545, 2235, 3090, 4470, 4841, 7003, 9682, 14006, 14523, 15347, 21009, 24205, 29046, 30694, 35015, 42018, 46041, 48410, 70030, 72615, 76735, 92082, 105045, 145230, 153470, 210090, 230205, 460410, 721309, 1442618, 2163927, 3606545, 4327854, 7213090, 10819635, 21639270]

約数ペア:

[(1, 21639270), (2, 10819635), (3, 7213090), (5, 4327854), (6, 3606545), (10, 2163927), (15, 1442618), (30, 721309), (47, 460410), (94, 230205), (103, 210090), (141, 153470), (149, 145230), (206, 105045), (235, 92082), (282, 76735), (298, 72615), (309, 70030), (447, 48410), (470, 46041), (515, 42018), (618, 35015), (705, 30694), (745, 29046), (894, 24205), (1030, 21009), (1410, 15347), (1490, 14523), (1545, 14006), (2235, 9682), (3090, 7003), (4470, 4841)]