138701440

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6991}}^1$

素因数の和:7041

約数の個数: 64

約数和(自身を含む): 342328320

約数和(自身を除く): 203626880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 6991, 9920, 13982, 19840, 27964, 34955, 55928, 69910, 111856, 139820, 216721, 223712, 279640, 433442, 447424, 559280, 866884, 894848, 1083605, 1118560, 1733768, 2167210, 2237120, 3467536, 4334420, 4474240, 6935072, 8668840, 13870144, 17337680, 27740288, 34675360, 69350720, 138701440]

約数ペア:

[(1, 138701440), (2, 69350720), (4, 34675360), (5, 27740288), (8, 17337680), (10, 13870144), (16, 8668840), (20, 6935072), (31, 4474240), (32, 4334420), (40, 3467536), (62, 2237120), (64, 2167210), (80, 1733768), (124, 1118560), (128, 1083605), (155, 894848), (160, 866884), (248, 559280), (310, 447424), (320, 433442), (496, 279640), (620, 223712), (640, 216721), (992, 139820), (1240, 111856), (1984, 69910), (2480, 55928), (3968, 34955), (4960, 27964), (6991, 19840), (9920, 13982)]