28357920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{419}}^1$

素因数の和:487

約数の個数: 144

約数和(自身を含む): 99066240

約数和(自身を除く): 70708320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 72, 80, 90, 94, 96, 120, 141, 144, 160, 180, 188, 235, 240, 282, 288, 360, 376, 419, 423, 470, 480, 564, 705, 720, 752, 838, 846, 940, 1128, 1257, 1410, 1440, 1504, 1676, 1692, 1880, 2095, 2115, 2256, 2514, 2820, 3352, 3384, 3760, 3771, 4190, 4230, 4512, 5028, 5640, 6285, 6704, 6768, 7520, 7542, 8380, 8460, 10056, 11280, 12570, 13408, 13536, 15084, 16760, 16920, 18855, 19693, 20112, 22560, 25140, 30168, 33520, 33840, 37710, 39386, 40224, 50280, 59079, 60336, 67040, 67680, 75420, 78772, 98465, 100560, 118158, 120672, 150840, 157544, 177237, 196930, 201120, 236316, 295395, 301680, 315088, 354474, 393860, 472632, 590790, 603360, 630176, 708948, 787720, 886185, 945264, 1181580, 1417896, 1575440, 1772370, 1890528, 2363160, 2835792, 3150880, 3544740, 4726320, 5671584, 7089480, 9452640, 14178960, 28357920]

約数ペア:

[(1, 28357920), (2, 14178960), (3, 9452640), (4, 7089480), (5, 5671584), (6, 4726320), (8, 3544740), (9, 3150880), (10, 2835792), (12, 2363160), (15, 1890528), (16, 1772370), (18, 1575440), (20, 1417896), (24, 1181580), (30, 945264), (32, 886185), (36, 787720), (40, 708948), (45, 630176), (47, 603360), (48, 590790), (60, 472632), (72, 393860), (80, 354474), (90, 315088), (94, 301680), (96, 295395), (120, 236316), (141, 201120), (144, 196930), (160, 177237), (180, 157544), (188, 150840), (235, 120672), (240, 118158), (282, 100560), (288, 98465), (360, 78772), (376, 75420), (419, 67680), (423, 67040), (470, 60336), (480, 59079), (564, 50280), (705, 40224), (720, 39386), (752, 37710), (838, 33840), (846, 33520), (940, 30168), (1128, 25140), (1257, 22560), (1410, 20112), (1440, 19693), (1504, 18855), (1676, 16920), (1692, 16760), (1880, 15084), (2095, 13536), (2115, 13408), (2256, 12570), (2514, 11280), (2820, 10056), (3352, 8460), (3384, 8380), (3760, 7542), (3771, 7520), (4190, 6768), (4230, 6704), (4512, 6285), (5028, 5640)]