161918456

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4909}}^1$

素因数の和:4972

約数の個数: 64

約数和(自身を含む): 377088000

約数和(自身を除く): 215169544

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 31, 38, 56, 62, 76, 124, 133, 152, 217, 248, 266, 434, 532, 589, 868, 1064, 1178, 1736, 2356, 4123, 4712, 4909, 8246, 9818, 16492, 19636, 32984, 34363, 39272, 68726, 93271, 137452, 152179, 186542, 274904, 304358, 373084, 608716, 652897, 746168, 1065253, 1217432, 1305794, 2130506, 2611588, 2891401, 4261012, 5223176, 5782802, 8522024, 11565604, 20239807, 23131208, 40479614, 80959228, 161918456]

約数ペア:

[(1, 161918456), (2, 80959228), (4, 40479614), (7, 23131208), (8, 20239807), (14, 11565604), (19, 8522024), (28, 5782802), (31, 5223176), (38, 4261012), (56, 2891401), (62, 2611588), (76, 2130506), (124, 1305794), (133, 1217432), (152, 1065253), (217, 746168), (248, 652897), (266, 608716), (434, 373084), (532, 304358), (589, 274904), (868, 186542), (1064, 152179), (1178, 137452), (1736, 93271), (2356, 68726), (4123, 39272), (4712, 34363), (4909, 32984), (8246, 19636), (9818, 16492)]