31005080

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{131}}^1$

素因数の和:300

約数の個数: 64

約数和(自身を含む): 72182880

約数和(自身を除く): 41177800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 97, 122, 131, 194, 244, 262, 305, 388, 485, 488, 524, 610, 655, 776, 970, 1048, 1220, 1310, 1940, 2440, 2620, 3880, 5240, 5917, 7991, 11834, 12707, 15982, 23668, 25414, 29585, 31964, 39955, 47336, 50828, 59170, 63535, 63928, 79910, 101656, 118340, 127070, 159820, 236680, 254140, 319640, 508280, 775127, 1550254, 3100508, 3875635, 6201016, 7751270, 15502540, 31005080]

約数ペア:

[(1, 31005080), (2, 15502540), (4, 7751270), (5, 6201016), (8, 3875635), (10, 3100508), (20, 1550254), (40, 775127), (61, 508280), (97, 319640), (122, 254140), (131, 236680), (194, 159820), (244, 127070), (262, 118340), (305, 101656), (388, 79910), (485, 63928), (488, 63535), (524, 59170), (610, 50828), (655, 47336), (776, 39955), (970, 31964), (1048, 29585), (1220, 25414), (1310, 23668), (1940, 15982), (2440, 12707), (2620, 11834), (3880, 7991), (5240, 5917)]