20918604

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1901}}^1$

素因数の和:2046

約数の個数: 48

約数和(自身を含む): 56238336

約数和(自身を除く): 35319732

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 131, 262, 393, 524, 786, 917, 1572, 1834, 1901, 2751, 3668, 3802, 5502, 5703, 7604, 11004, 11406, 13307, 22812, 26614, 39921, 53228, 79842, 159684, 249031, 498062, 747093, 996124, 1494186, 1743217, 2988372, 3486434, 5229651, 6972868, 10459302, 20918604]

約数ペア:

[(1, 20918604), (2, 10459302), (3, 6972868), (4, 5229651), (6, 3486434), (7, 2988372), (12, 1743217), (14, 1494186), (21, 996124), (28, 747093), (42, 498062), (84, 249031), (131, 159684), (262, 79842), (393, 53228), (524, 39921), (786, 26614), (917, 22812), (1572, 13307), (1834, 11406), (1901, 11004), (2751, 7604), (3668, 5703), (3802, 5502)]