18219785

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 23998464

約数和(自身を除く): 5778679

約数列:

[1, 5, 31, 41, 47, 61, 155, 205, 235, 305, 1271, 1457, 1891, 1927, 2501, 2867, 6355, 7285, 9455, 9635, 12505, 14335, 59737, 77531, 88877, 117547, 298685, 387655, 444385, 587735, 3643957, 18219785]

約数ペア:

[(1, 18219785), (5, 3643957), (31, 587735), (41, 444385), (47, 387655), (61, 298685), (155, 117547), (205, 88877), (235, 77531), (305, 59737), (1271, 14335), (1457, 12505), (1891, 9635), (1927, 9455), (2501, 7285), (2867, 6355)]