9905740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1229}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 23143680

約数和(自身を除く): 13237940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1229, 1612, 2015, 2458, 4030, 4916, 6145, 8060, 12290, 15977, 24580, 31954, 38099, 63908, 76198, 79885, 152396, 159770, 190495, 319540, 380990, 495287, 761980, 990574, 1981148, 2476435, 4952870, 9905740]

約数ペア:

[(1, 9905740), (2, 4952870), (4, 2476435), (5, 1981148), (10, 990574), (13, 761980), (20, 495287), (26, 380990), (31, 319540), (52, 190495), (62, 159770), (65, 152396), (124, 79885), (130, 76198), (155, 63908), (260, 38099), (310, 31954), (403, 24580), (620, 15977), (806, 12290), (1229, 8060), (1612, 6145), (2015, 4916), (2458, 4030)]