81389640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:871

約数の個数: 128

約数和(自身を含む): 261999360

約数和(自身を除く): 180609720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 37, 40, 46, 60, 69, 74, 92, 111, 115, 120, 138, 148, 184, 185, 222, 230, 276, 296, 345, 370, 444, 460, 552, 555, 690, 740, 797, 851, 888, 920, 1110, 1380, 1480, 1594, 1702, 2220, 2391, 2553, 2760, 3188, 3404, 3985, 4255, 4440, 4782, 5106, 6376, 6808, 7970, 8510, 9564, 10212, 11955, 12765, 15940, 17020, 18331, 19128, 20424, 23910, 25530, 29489, 31880, 34040, 36662, 47820, 51060, 54993, 58978, 73324, 88467, 91655, 95640, 102120, 109986, 117956, 146648, 147445, 176934, 183310, 219972, 235912, 274965, 294890, 353868, 366620, 439944, 442335, 549930, 589780, 678247, 707736, 733240, 884670, 1099860, 1179560, 1356494, 1769340, 2034741, 2199720, 2712988, 3391235, 3538680, 4069482, 5425976, 6782470, 8138964, 10173705, 13564940, 16277928, 20347410, 27129880, 40694820, 81389640]

約数ペア:

[(1, 81389640), (2, 40694820), (3, 27129880), (4, 20347410), (5, 16277928), (6, 13564940), (8, 10173705), (10, 8138964), (12, 6782470), (15, 5425976), (20, 4069482), (23, 3538680), (24, 3391235), (30, 2712988), (37, 2199720), (40, 2034741), (46, 1769340), (60, 1356494), (69, 1179560), (74, 1099860), (92, 884670), (111, 733240), (115, 707736), (120, 678247), (138, 589780), (148, 549930), (184, 442335), (185, 439944), (222, 366620), (230, 353868), (276, 294890), (296, 274965), (345, 235912), (370, 219972), (444, 183310), (460, 176934), (552, 147445), (555, 146648), (690, 117956), (740, 109986), (797, 102120), (851, 95640), (888, 91655), (920, 88467), (1110, 73324), (1380, 58978), (1480, 54993), (1594, 51060), (1702, 47820), (2220, 36662), (2391, 34040), (2553, 31880), (2760, 29489), (3188, 25530), (3404, 23910), (3985, 20424), (4255, 19128), (4440, 18331), (4782, 17020), (5106, 15940), (6376, 12765), (6808, 11955), (7970, 10212), (8510, 9564)]