21053886

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{3659}}^1$

素因数の和:3808

約数の個数: 32

約数和(自身を含む): 48487680

約数和(自身を除く): 27433794

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 137, 274, 411, 822, 959, 1918, 2877, 3659, 5754, 7318, 10977, 21954, 25613, 51226, 76839, 153678, 501283, 1002566, 1503849, 3007698, 3508981, 7017962, 10526943, 21053886]

約数ペア:

[(1, 21053886), (2, 10526943), (3, 7017962), (6, 3508981), (7, 3007698), (14, 1503849), (21, 1002566), (42, 501283), (137, 153678), (274, 76839), (411, 51226), (822, 25613), (959, 21954), (1918, 10977), (2877, 7318), (3659, 5754)]