18920820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{3251}}^1$

素因数の和:3360

約数の個数: 48

約数和(自身を含む): 53540928

約数和(自身を除く): 34620108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 97, 194, 291, 388, 485, 582, 970, 1164, 1455, 1940, 2910, 3251, 5820, 6502, 9753, 13004, 16255, 19506, 32510, 39012, 48765, 65020, 97530, 195060, 315347, 630694, 946041, 1261388, 1576735, 1892082, 3153470, 3784164, 4730205, 6306940, 9460410, 18920820]

約数ペア:

[(1, 18920820), (2, 9460410), (3, 6306940), (4, 4730205), (5, 3784164), (6, 3153470), (10, 1892082), (12, 1576735), (15, 1261388), (20, 946041), (30, 630694), (60, 315347), (97, 195060), (194, 97530), (291, 65020), (388, 48765), (485, 39012), (582, 32510), (970, 19506), (1164, 16255), (1455, 13004), (1940, 9753), (2910, 6502), (3251, 5820)]