54321720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:297

約数の個数: 128

約数和(自身を含む): 170614080

約数和(自身を除く): 116292360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 61, 82, 120, 122, 123, 164, 181, 183, 205, 244, 246, 305, 328, 362, 366, 410, 488, 492, 543, 610, 615, 724, 732, 820, 905, 915, 984, 1086, 1220, 1230, 1448, 1464, 1640, 1810, 1830, 2172, 2440, 2460, 2501, 2715, 3620, 3660, 4344, 4920, 5002, 5430, 7240, 7320, 7421, 7503, 10004, 10860, 11041, 12505, 14842, 15006, 20008, 21720, 22082, 22263, 25010, 29684, 30012, 33123, 37105, 37515, 44164, 44526, 50020, 55205, 59368, 60024, 66246, 74210, 75030, 88328, 89052, 100040, 110410, 111315, 132492, 148420, 150060, 165615, 178104, 220820, 222630, 264984, 296840, 300120, 331230, 441640, 445260, 452681, 662460, 890520, 905362, 1324920, 1358043, 1810724, 2263405, 2716086, 3621448, 4526810, 5432172, 6790215, 9053620, 10864344, 13580430, 18107240, 27160860, 54321720]

約数ペア:

[(1, 54321720), (2, 27160860), (3, 18107240), (4, 13580430), (5, 10864344), (6, 9053620), (8, 6790215), (10, 5432172), (12, 4526810), (15, 3621448), (20, 2716086), (24, 2263405), (30, 1810724), (40, 1358043), (41, 1324920), (60, 905362), (61, 890520), (82, 662460), (120, 452681), (122, 445260), (123, 441640), (164, 331230), (181, 300120), (183, 296840), (205, 264984), (244, 222630), (246, 220820), (305, 178104), (328, 165615), (362, 150060), (366, 148420), (410, 132492), (488, 111315), (492, 110410), (543, 100040), (610, 89052), (615, 88328), (724, 75030), (732, 74210), (820, 66246), (905, 60024), (915, 59368), (984, 55205), (1086, 50020), (1220, 44526), (1230, 44164), (1448, 37515), (1464, 37105), (1640, 33123), (1810, 30012), (1830, 29684), (2172, 25010), (2440, 22263), (2460, 22082), (2501, 21720), (2715, 20008), (3620, 15006), (3660, 14842), (4344, 12505), (4920, 11041), (5002, 10860), (5430, 10004), (7240, 7503), (7320, 7421)]