81478440

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2039}}^1$

素因数の和:2096

約数の個数: 128

約数和(自身を含む): 279072000

約数和(自身を除く): 197593560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 540, 555, 666, 740, 888, 999, 1080, 1110, 1332, 1480, 1665, 1998, 2039, 2220, 2664, 3330, 3996, 4078, 4440, 4995, 6117, 6660, 7992, 8156, 9990, 10195, 12234, 13320, 16312, 18351, 19980, 20390, 24468, 30585, 36702, 39960, 40780, 48936, 55053, 61170, 73404, 75443, 81560, 91755, 110106, 122340, 146808, 150886, 183510, 220212, 226329, 244680, 275265, 301772, 367020, 377215, 440424, 452658, 550530, 603544, 678987, 734040, 754430, 905316, 1101060, 1131645, 1357974, 1508860, 1810632, 2036961, 2202120, 2263290, 2715948, 3017720, 3394935, 4073922, 4526580, 5431896, 6789870, 8147844, 9053160, 10184805, 13579740, 16295688, 20369610, 27159480, 40739220, 81478440]

約数ペア:

[(1, 81478440), (2, 40739220), (3, 27159480), (4, 20369610), (5, 16295688), (6, 13579740), (8, 10184805), (9, 9053160), (10, 8147844), (12, 6789870), (15, 5431896), (18, 4526580), (20, 4073922), (24, 3394935), (27, 3017720), (30, 2715948), (36, 2263290), (37, 2202120), (40, 2036961), (45, 1810632), (54, 1508860), (60, 1357974), (72, 1131645), (74, 1101060), (90, 905316), (108, 754430), (111, 734040), (120, 678987), (135, 603544), (148, 550530), (180, 452658), (185, 440424), (216, 377215), (222, 367020), (270, 301772), (296, 275265), (333, 244680), (360, 226329), (370, 220212), (444, 183510), (540, 150886), (555, 146808), (666, 122340), (740, 110106), (888, 91755), (999, 81560), (1080, 75443), (1110, 73404), (1332, 61170), (1480, 55053), (1665, 48936), (1998, 40780), (2039, 39960), (2220, 36702), (2664, 30585), (3330, 24468), (3996, 20390), (4078, 19980), (4440, 18351), (4995, 16312), (6117, 13320), (6660, 12234), (7992, 10195), (8156, 9990)]