28403280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:505

約数の個数: 120

約数和(自身を含む): 96565248

約数和(自身を除く): 68161968

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 103, 120, 144, 180, 206, 240, 309, 360, 383, 412, 515, 618, 720, 766, 824, 927, 1030, 1149, 1236, 1532, 1545, 1648, 1854, 1915, 2060, 2298, 2472, 3064, 3090, 3447, 3708, 3830, 4120, 4596, 4635, 4944, 5745, 6128, 6180, 6894, 7416, 7660, 8240, 9192, 9270, 11490, 12360, 13788, 14832, 15320, 17235, 18384, 18540, 22980, 24720, 27576, 30640, 34470, 37080, 39449, 45960, 55152, 68940, 74160, 78898, 91920, 118347, 137880, 157796, 197245, 236694, 275760, 315592, 355041, 394490, 473388, 591735, 631184, 710082, 788980, 946776, 1183470, 1420164, 1577960, 1775205, 1893552, 2366940, 2840328, 3155920, 3550410, 4733880, 5680656, 7100820, 9467760, 14201640, 28403280]

約数ペア:

[(1, 28403280), (2, 14201640), (3, 9467760), (4, 7100820), (5, 5680656), (6, 4733880), (8, 3550410), (9, 3155920), (10, 2840328), (12, 2366940), (15, 1893552), (16, 1775205), (18, 1577960), (20, 1420164), (24, 1183470), (30, 946776), (36, 788980), (40, 710082), (45, 631184), (48, 591735), (60, 473388), (72, 394490), (80, 355041), (90, 315592), (103, 275760), (120, 236694), (144, 197245), (180, 157796), (206, 137880), (240, 118347), (309, 91920), (360, 78898), (383, 74160), (412, 68940), (515, 55152), (618, 45960), (720, 39449), (766, 37080), (824, 34470), (927, 30640), (1030, 27576), (1149, 24720), (1236, 22980), (1532, 18540), (1545, 18384), (1648, 17235), (1854, 15320), (1915, 14832), (2060, 13788), (2298, 12360), (2472, 11490), (3064, 9270), (3090, 9192), (3447, 8240), (3708, 7660), (3830, 7416), (4120, 6894), (4596, 6180), (4635, 6128), (4944, 5745)]