161855650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{863}}^1$

素因数の和:928

約数の個数: 72

約数和(自身を含む): 341978112

約数和(自身を除く): 180122462

約数列:

[1, 2, 5, 10, 11, 22, 25, 31, 50, 55, 62, 110, 121, 155, 242, 275, 310, 341, 550, 605, 682, 775, 863, 1210, 1550, 1705, 1726, 3025, 3410, 3751, 4315, 6050, 7502, 8525, 8630, 9493, 17050, 18755, 18986, 21575, 26753, 37510, 43150, 47465, 53506, 93775, 94930, 104423, 133765, 187550, 208846, 237325, 267530, 294283, 474650, 522115, 588566, 668825, 1044230, 1337650, 1471415, 2610575, 2942830, 3237113, 5221150, 6474226, 7357075, 14714150, 16185565, 32371130, 80927825, 161855650]

約数ペア:

[(1, 161855650), (2, 80927825), (5, 32371130), (10, 16185565), (11, 14714150), (22, 7357075), (25, 6474226), (31, 5221150), (50, 3237113), (55, 2942830), (62, 2610575), (110, 1471415), (121, 1337650), (155, 1044230), (242, 668825), (275, 588566), (310, 522115), (341, 474650), (550, 294283), (605, 267530), (682, 237325), (775, 208846), (863, 187550), (1210, 133765), (1550, 104423), (1705, 94930), (1726, 93775), (3025, 53506), (3410, 47465), (3751, 43150), (4315, 37510), (6050, 26753), (7502, 21575), (8525, 18986), (8630, 18755), (9493, 17050)]