31878080

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:206

約数の個数: 112

約数和(自身を含む): 83637120

約数和(自身を除く): 51759040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 79, 80, 97, 104, 130, 158, 160, 194, 208, 260, 316, 320, 388, 395, 416, 485, 520, 632, 776, 790, 832, 970, 1027, 1040, 1261, 1264, 1552, 1580, 1940, 2054, 2080, 2522, 2528, 3104, 3160, 3880, 4108, 4160, 5044, 5056, 5135, 6208, 6305, 6320, 7663, 7760, 8216, 10088, 10270, 12610, 12640, 15326, 15520, 16432, 20176, 20540, 25220, 25280, 30652, 31040, 32864, 38315, 40352, 41080, 50440, 61304, 65728, 76630, 80704, 82160, 99619, 100880, 122608, 153260, 164320, 199238, 201760, 245216, 306520, 328640, 398476, 403520, 490432, 498095, 613040, 796952, 996190, 1226080, 1593904, 1992380, 2452160, 3187808, 3984760, 6375616, 7969520, 15939040, 31878080]

約数ペア:

[(1, 31878080), (2, 15939040), (4, 7969520), (5, 6375616), (8, 3984760), (10, 3187808), (13, 2452160), (16, 1992380), (20, 1593904), (26, 1226080), (32, 996190), (40, 796952), (52, 613040), (64, 498095), (65, 490432), (79, 403520), (80, 398476), (97, 328640), (104, 306520), (130, 245216), (158, 201760), (160, 199238), (194, 164320), (208, 153260), (260, 122608), (316, 100880), (320, 99619), (388, 82160), (395, 80704), (416, 76630), (485, 65728), (520, 61304), (632, 50440), (776, 41080), (790, 40352), (832, 38315), (970, 32864), (1027, 31040), (1040, 30652), (1261, 25280), (1264, 25220), (1552, 20540), (1580, 20176), (1940, 16432), (2054, 15520), (2080, 15326), (2522, 12640), (2528, 12610), (3104, 10270), (3160, 10088), (3880, 8216), (4108, 7760), (4160, 7663), (5044, 6320), (5056, 6305), (5135, 6208)]