21738280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28603}}^1$

素因数の和:28633

約数の個数: 32

約数和(自身を含む): 51487200

約数和(自身を除く): 29748920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28603, 57206, 114412, 143015, 228824, 286030, 543457, 572060, 1086914, 1144120, 2173828, 2717285, 4347656, 5434570, 10869140, 21738280]

約数ペア:

[(1, 21738280), (2, 10869140), (4, 5434570), (5, 4347656), (8, 2717285), (10, 2173828), (19, 1144120), (20, 1086914), (38, 572060), (40, 543457), (76, 286030), (95, 228824), (152, 143015), (190, 114412), (380, 57206), (760, 28603)]