21915915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6733}}^1$

素因数の和:6779

約数の個数: 32

約数和(自身を含む): 41373696

約数和(自身を除く): 19457781

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 93, 105, 155, 217, 465, 651, 1085, 3255, 6733, 20199, 33665, 47131, 100995, 141393, 208723, 235655, 626169, 706965, 1043615, 1461061, 3130845, 4383183, 7305305, 21915915]

約数ペア:

[(1, 21915915), (3, 7305305), (5, 4383183), (7, 3130845), (15, 1461061), (21, 1043615), (31, 706965), (35, 626169), (93, 235655), (105, 208723), (155, 141393), (217, 100995), (465, 47131), (651, 33665), (1085, 20199), (3255, 6733)]