21502995

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 35887104

約数和(自身を除く): 14384109

約数列:

[1, 3, 5, 15, 31, 93, 131, 155, 353, 393, 465, 655, 1059, 1765, 1965, 4061, 5295, 10943, 12183, 20305, 32829, 46243, 54715, 60915, 138729, 164145, 231215, 693645, 1433533, 4300599, 7167665, 21502995]

約数ペア:

[(1, 21502995), (3, 7167665), (5, 4300599), (15, 1433533), (31, 693645), (93, 231215), (131, 164145), (155, 138729), (353, 60915), (393, 54715), (465, 46243), (655, 32829), (1059, 20305), (1765, 12183), (1965, 10943), (4061, 5295)]