81373760

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{631}}^1$

素因数の和:692

約数の個数: 112

約数和(自身を含む): 215749632

約数和(自身を除く): 134375872

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 631, 806, 832, 992, 1040, 1240, 1262, 1612, 1984, 2015, 2080, 2480, 2524, 3155, 3224, 4030, 4160, 4960, 5048, 6310, 6448, 8060, 8203, 9920, 10096, 12620, 12896, 16120, 16406, 19561, 20192, 25240, 25792, 32240, 32812, 39122, 40384, 41015, 50480, 64480, 65624, 78244, 82030, 97805, 100960, 128960, 131248, 156488, 164060, 195610, 201920, 254293, 262496, 312976, 328120, 391220, 508586, 524992, 625952, 656240, 782440, 1017172, 1251904, 1271465, 1312480, 1564880, 2034344, 2542930, 2624960, 3129760, 4068688, 5085860, 6259520, 8137376, 10171720, 16274752, 20343440, 40686880, 81373760]

約数ペア:

[(1, 81373760), (2, 40686880), (4, 20343440), (5, 16274752), (8, 10171720), (10, 8137376), (13, 6259520), (16, 5085860), (20, 4068688), (26, 3129760), (31, 2624960), (32, 2542930), (40, 2034344), (52, 1564880), (62, 1312480), (64, 1271465), (65, 1251904), (80, 1017172), (104, 782440), (124, 656240), (130, 625952), (155, 524992), (160, 508586), (208, 391220), (248, 328120), (260, 312976), (310, 262496), (320, 254293), (403, 201920), (416, 195610), (496, 164060), (520, 156488), (620, 131248), (631, 128960), (806, 100960), (832, 97805), (992, 82030), (1040, 78244), (1240, 65624), (1262, 64480), (1612, 50480), (1984, 41015), (2015, 40384), (2080, 39122), (2480, 32812), (2524, 32240), (3155, 25792), (3224, 25240), (4030, 20192), (4160, 19561), (4960, 16406), (5048, 16120), (6310, 12896), (6448, 12620), (8060, 10096), (8203, 9920)]