28138545

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{877}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 52595712

約数和(自身を除く): 24457167

約数列:

[1, 3, 5, 9, 15, 23, 31, 45, 69, 93, 115, 155, 207, 279, 345, 465, 713, 877, 1035, 1395, 2139, 2631, 3565, 4385, 6417, 7893, 10695, 13155, 20171, 27187, 32085, 39465, 60513, 81561, 100855, 135935, 181539, 244683, 302565, 407805, 625301, 907695, 1223415, 1875903, 3126505, 5627709, 9379515, 28138545]

約数ペア:

[(1, 28138545), (3, 9379515), (5, 5627709), (9, 3126505), (15, 1875903), (23, 1223415), (31, 907695), (45, 625301), (69, 407805), (93, 302565), (115, 244683), (155, 181539), (207, 135935), (279, 100855), (345, 81561), (465, 60513), (713, 39465), (877, 32085), (1035, 27187), (1395, 20171), (2139, 13155), (2631, 10695), (3565, 7893), (4385, 6417)]