20505150

素因数分解:

$2^1\times 3^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 120

約数和(自身を含む): 58605624

約数和(自身を除く): 38100474

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 27, 30, 45, 50, 54, 61, 75, 81, 83, 90, 122, 135, 150, 162, 166, 183, 225, 249, 270, 305, 366, 405, 415, 450, 498, 549, 610, 675, 747, 810, 830, 915, 1098, 1245, 1350, 1494, 1525, 1647, 1830, 2025, 2075, 2241, 2490, 2745, 3050, 3294, 3735, 4050, 4150, 4482, 4575, 4941, 5063, 5490, 6225, 6723, 7470, 8235, 9150, 9882, 10126, 11205, 12450, 13446, 13725, 15189, 16470, 18675, 22410, 24705, 25315, 27450, 30378, 33615, 37350, 41175, 45567, 49410, 50630, 56025, 67230, 75945, 82350, 91134, 112050, 123525, 126575, 136701, 151890, 168075, 227835, 247050, 253150, 273402, 336150, 379725, 410103, 455670, 683505, 759450, 820206, 1139175, 1367010, 2050515, 2278350, 3417525, 4101030, 6835050, 10252575, 20505150]

約数ペア:

[(1, 20505150), (2, 10252575), (3, 6835050), (5, 4101030), (6, 3417525), (9, 2278350), (10, 2050515), (15, 1367010), (18, 1139175), (25, 820206), (27, 759450), (30, 683505), (45, 455670), (50, 410103), (54, 379725), (61, 336150), (75, 273402), (81, 253150), (83, 247050), (90, 227835), (122, 168075), (135, 151890), (150, 136701), (162, 126575), (166, 123525), (183, 112050), (225, 91134), (249, 82350), (270, 75945), (305, 67230), (366, 56025), (405, 50630), (415, 49410), (450, 45567), (498, 41175), (549, 37350), (610, 33615), (675, 30378), (747, 27450), (810, 25315), (830, 24705), (915, 22410), (1098, 18675), (1245, 16470), (1350, 15189), (1494, 13725), (1525, 13446), (1647, 12450), (1830, 11205), (2025, 10126), (2075, 9882), (2241, 9150), (2490, 8235), (2745, 7470), (3050, 6723), (3294, 6225), (3735, 5490), (4050, 5063), (4150, 4941), (4482, 4575)]