9908840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:234

約数の個数: 64

約数和(自身を含む): 23569920

約数和(自身を除く): 13661080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 131, 155, 244, 248, 262, 305, 310, 488, 524, 610, 620, 655, 1048, 1220, 1240, 1310, 1891, 2440, 2620, 3782, 4061, 5240, 7564, 7991, 8122, 9455, 15128, 15982, 16244, 18910, 20305, 31964, 32488, 37820, 39955, 40610, 63928, 75640, 79910, 81220, 159820, 162440, 247721, 319640, 495442, 990884, 1238605, 1981768, 2477210, 4954420, 9908840]

約数ペア:

[(1, 9908840), (2, 4954420), (4, 2477210), (5, 1981768), (8, 1238605), (10, 990884), (20, 495442), (31, 319640), (40, 247721), (61, 162440), (62, 159820), (122, 81220), (124, 79910), (131, 75640), (155, 63928), (244, 40610), (248, 39955), (262, 37820), (305, 32488), (310, 31964), (488, 20305), (524, 18910), (610, 16244), (620, 15982), (655, 15128), (1048, 9455), (1220, 8122), (1240, 7991), (1310, 7564), (1891, 5240), (2440, 4061), (2620, 3782)]