28132020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{269}}^1$

素因数の和:374

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 70934220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 83, 84, 90, 105, 126, 140, 166, 180, 210, 249, 252, 269, 315, 332, 415, 420, 498, 538, 581, 630, 747, 807, 830, 996, 1076, 1162, 1245, 1260, 1345, 1494, 1614, 1660, 1743, 1883, 2324, 2421, 2490, 2690, 2905, 2988, 3228, 3486, 3735, 3766, 4035, 4842, 4980, 5229, 5380, 5649, 5810, 6972, 7470, 7532, 8070, 8715, 9415, 9684, 10458, 11298, 11620, 12105, 14940, 16140, 16947, 17430, 18830, 20916, 22327, 22596, 24210, 26145, 28245, 33894, 34860, 37660, 44654, 48420, 52290, 56490, 66981, 67788, 84735, 89308, 104580, 111635, 112980, 133962, 156289, 169470, 200943, 223270, 267924, 312578, 334905, 338940, 401886, 446540, 468867, 625156, 669810, 781445, 803772, 937734, 1004715, 1339620, 1406601, 1562890, 1875468, 2009430, 2344335, 2813202, 3125780, 4018860, 4688670, 5626404, 7033005, 9377340, 14066010, 28132020]

約数ペア:

[(1, 28132020), (2, 14066010), (3, 9377340), (4, 7033005), (5, 5626404), (6, 4688670), (7, 4018860), (9, 3125780), (10, 2813202), (12, 2344335), (14, 2009430), (15, 1875468), (18, 1562890), (20, 1406601), (21, 1339620), (28, 1004715), (30, 937734), (35, 803772), (36, 781445), (42, 669810), (45, 625156), (60, 468867), (63, 446540), (70, 401886), (83, 338940), (84, 334905), (90, 312578), (105, 267924), (126, 223270), (140, 200943), (166, 169470), (180, 156289), (210, 133962), (249, 112980), (252, 111635), (269, 104580), (315, 89308), (332, 84735), (415, 67788), (420, 66981), (498, 56490), (538, 52290), (581, 48420), (630, 44654), (747, 37660), (807, 34860), (830, 33894), (996, 28245), (1076, 26145), (1162, 24210), (1245, 22596), (1260, 22327), (1345, 20916), (1494, 18830), (1614, 17430), (1660, 16947), (1743, 16140), (1883, 14940), (2324, 12105), (2421, 11620), (2490, 11298), (2690, 10458), (2905, 9684), (2988, 9415), (3228, 8715), (3486, 8070), (3735, 7532), (3766, 7470), (4035, 6972), (4842, 5810), (4980, 5649), (5229, 5380)]