21572985

素因数分解:

$3^1\times 5^1\times 7^4\times {\mathrm{599}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 40334400

約数和(自身を除く): 18761415

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 599, 735, 1029, 1715, 1797, 2401, 2995, 4193, 5145, 7203, 8985, 12005, 12579, 20965, 29351, 36015, 62895, 88053, 146755, 205457, 440265, 616371, 1027285, 1438199, 3081855, 4314597, 7190995, 21572985]

約数ペア:

[(1, 21572985), (3, 7190995), (5, 4314597), (7, 3081855), (15, 1438199), (21, 1027285), (35, 616371), (49, 440265), (105, 205457), (147, 146755), (245, 88053), (343, 62895), (599, 36015), (735, 29351), (1029, 20965), (1715, 12579), (1797, 12005), (2401, 8985), (2995, 7203), (4193, 5145)]