21320940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1321}}^1$

素因数の和:1602

約数の個数: 48

約数和(自身を含む): 59965920

約数和(自身を除く): 38644980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 269, 538, 807, 1076, 1321, 1345, 1614, 2642, 2690, 3228, 3963, 4035, 5284, 5380, 6605, 7926, 8070, 13210, 15852, 16140, 19815, 26420, 39630, 79260, 355349, 710698, 1066047, 1421396, 1776745, 2132094, 3553490, 4264188, 5330235, 7106980, 10660470, 21320940]

約数ペア:

[(1, 21320940), (2, 10660470), (3, 7106980), (4, 5330235), (5, 4264188), (6, 3553490), (10, 2132094), (12, 1776745), (15, 1421396), (20, 1066047), (30, 710698), (60, 355349), (269, 79260), (538, 39630), (807, 26420), (1076, 19815), (1321, 16140), (1345, 15852), (1614, 13210), (2642, 8070), (2690, 7926), (3228, 6605), (3963, 5380), (4035, 5284)]