28218060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 95397120

約数和(自身を除く): 67179060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 260, 279, 310, 372, 389, 390, 403, 465, 468, 558, 585, 620, 778, 780, 806, 930, 1116, 1167, 1170, 1209, 1395, 1556, 1612, 1860, 1945, 2015, 2334, 2340, 2418, 2790, 3501, 3627, 3890, 4030, 4668, 4836, 5057, 5580, 5835, 6045, 7002, 7254, 7780, 8060, 10114, 11670, 12059, 12090, 14004, 14508, 15171, 17505, 18135, 20228, 23340, 24118, 24180, 25285, 30342, 35010, 36177, 36270, 45513, 48236, 50570, 60295, 60684, 70020, 72354, 72540, 75855, 91026, 101140, 108531, 120590, 144708, 151710, 156767, 180885, 182052, 217062, 227565, 241180, 303420, 313534, 361770, 434124, 455130, 470301, 542655, 627068, 723540, 783835, 910260, 940602, 1085310, 1410903, 1567670, 1881204, 2170620, 2351505, 2821806, 3135340, 4703010, 5643612, 7054515, 9406020, 14109030, 28218060]

約数ペア:

[(1, 28218060), (2, 14109030), (3, 9406020), (4, 7054515), (5, 5643612), (6, 4703010), (9, 3135340), (10, 2821806), (12, 2351505), (13, 2170620), (15, 1881204), (18, 1567670), (20, 1410903), (26, 1085310), (30, 940602), (31, 910260), (36, 783835), (39, 723540), (45, 627068), (52, 542655), (60, 470301), (62, 455130), (65, 434124), (78, 361770), (90, 313534), (93, 303420), (117, 241180), (124, 227565), (130, 217062), (155, 182052), (156, 180885), (180, 156767), (186, 151710), (195, 144708), (234, 120590), (260, 108531), (279, 101140), (310, 91026), (372, 75855), (389, 72540), (390, 72354), (403, 70020), (465, 60684), (468, 60295), (558, 50570), (585, 48236), (620, 45513), (778, 36270), (780, 36177), (806, 35010), (930, 30342), (1116, 25285), (1167, 24180), (1170, 24118), (1209, 23340), (1395, 20228), (1556, 18135), (1612, 17505), (1860, 15171), (1945, 14508), (2015, 14004), (2334, 12090), (2340, 12059), (2418, 11670), (2790, 10114), (3501, 8060), (3627, 7780), (3890, 7254), (4030, 7002), (4668, 6045), (4836, 5835), (5057, 5580)]