21405690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5801}}^1$

素因数の和:5855

約数の個数: 48

約数和(自身を含む): 57022056

約数和(自身を除く): 35616366

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 41, 45, 82, 90, 123, 205, 246, 369, 410, 615, 738, 1230, 1845, 3690, 5801, 11602, 17403, 29005, 34806, 52209, 58010, 87015, 104418, 174030, 237841, 261045, 475682, 522090, 713523, 1189205, 1427046, 2140569, 2378410, 3567615, 4281138, 7135230, 10702845, 21405690]

約数ペア:

[(1, 21405690), (2, 10702845), (3, 7135230), (5, 4281138), (6, 3567615), (9, 2378410), (10, 2140569), (15, 1427046), (18, 1189205), (30, 713523), (41, 522090), (45, 475682), (82, 261045), (90, 237841), (123, 174030), (205, 104418), (246, 87015), (369, 58010), (410, 52209), (615, 34806), (738, 29005), (1230, 17403), (1845, 11602), (3690, 5801)]