21708735

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^3\times {\mathrm{211}}^1$

素因数の和:276

約数の個数: 32

約数和(自身を含む): 36837120

約数和(自身を除く): 15128385

約数列:

[1, 3, 5, 15, 19, 57, 95, 211, 285, 361, 633, 1055, 1083, 1805, 3165, 4009, 5415, 6859, 12027, 20045, 20577, 34295, 60135, 76171, 102885, 228513, 380855, 1142565, 1447249, 4341747, 7236245, 21708735]

約数ペア:

[(1, 21708735), (3, 7236245), (5, 4341747), (15, 1447249), (19, 1142565), (57, 380855), (95, 228513), (211, 102885), (285, 76171), (361, 60135), (633, 34295), (1055, 20577), (1083, 20045), (1805, 12027), (3165, 6859), (4009, 5415)]