28171920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:473

約数の個数: 160

約数和(自身を含む): 102493440

約数和(自身を除く): 74321520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 41, 42, 48, 56, 60, 70, 80, 82, 84, 105, 112, 120, 123, 140, 164, 168, 205, 210, 240, 246, 280, 287, 328, 336, 409, 410, 420, 492, 560, 574, 615, 656, 818, 820, 840, 861, 984, 1148, 1227, 1230, 1435, 1636, 1640, 1680, 1722, 1968, 2045, 2296, 2454, 2460, 2863, 2870, 3272, 3280, 3444, 4090, 4305, 4592, 4908, 4920, 5726, 5740, 6135, 6544, 6888, 8180, 8589, 8610, 9816, 9840, 11452, 11480, 12270, 13776, 14315, 16360, 16769, 17178, 17220, 19632, 22904, 22960, 24540, 28630, 32720, 33538, 34356, 34440, 42945, 45808, 49080, 50307, 57260, 67076, 68712, 68880, 83845, 85890, 98160, 100614, 114520, 117383, 134152, 137424, 167690, 171780, 201228, 229040, 234766, 251535, 268304, 335380, 343560, 352149, 402456, 469532, 503070, 586915, 670760, 687120, 704298, 804912, 939064, 1006140, 1173830, 1341520, 1408596, 1760745, 1878128, 2012280, 2347660, 2817192, 3521490, 4024560, 4695320, 5634384, 7042980, 9390640, 14085960, 28171920]

約数ペア:

[(1, 28171920), (2, 14085960), (3, 9390640), (4, 7042980), (5, 5634384), (6, 4695320), (7, 4024560), (8, 3521490), (10, 2817192), (12, 2347660), (14, 2012280), (15, 1878128), (16, 1760745), (20, 1408596), (21, 1341520), (24, 1173830), (28, 1006140), (30, 939064), (35, 804912), (40, 704298), (41, 687120), (42, 670760), (48, 586915), (56, 503070), (60, 469532), (70, 402456), (80, 352149), (82, 343560), (84, 335380), (105, 268304), (112, 251535), (120, 234766), (123, 229040), (140, 201228), (164, 171780), (168, 167690), (205, 137424), (210, 134152), (240, 117383), (246, 114520), (280, 100614), (287, 98160), (328, 85890), (336, 83845), (409, 68880), (410, 68712), (420, 67076), (492, 57260), (560, 50307), (574, 49080), (615, 45808), (656, 42945), (818, 34440), (820, 34356), (840, 33538), (861, 32720), (984, 28630), (1148, 24540), (1227, 22960), (1230, 22904), (1435, 19632), (1636, 17220), (1640, 17178), (1680, 16769), (1722, 16360), (1968, 14315), (2045, 13776), (2296, 12270), (2454, 11480), (2460, 11452), (2863, 9840), (2870, 9816), (3272, 8610), (3280, 8589), (3444, 8180), (4090, 6888), (4305, 6544), (4592, 6135), (4908, 5740), (4920, 5726)]