20669280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{149}}^1$

素因数の和:201

約数の個数: 144

約数和(自身を含む): 69627600

約数和(自身を除く): 48958320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 149, 160, 170, 204, 240, 255, 272, 289, 298, 340, 408, 447, 480, 510, 544, 578, 596, 680, 745, 816, 867, 894, 1020, 1156, 1192, 1360, 1445, 1490, 1632, 1734, 1788, 2040, 2235, 2312, 2384, 2533, 2720, 2890, 2980, 3468, 3576, 4080, 4335, 4470, 4624, 4768, 5066, 5780, 5960, 6936, 7152, 7599, 8160, 8670, 8940, 9248, 10132, 11560, 11920, 12665, 13872, 14304, 15198, 17340, 17880, 20264, 23120, 23840, 25330, 27744, 30396, 34680, 35760, 37995, 40528, 43061, 46240, 50660, 60792, 69360, 71520, 75990, 81056, 86122, 101320, 121584, 129183, 138720, 151980, 172244, 202640, 215305, 243168, 258366, 303960, 344488, 405280, 430610, 516732, 607920, 645915, 688976, 861220, 1033464, 1215840, 1291830, 1377952, 1722440, 2066928, 2583660, 3444880, 4133856, 5167320, 6889760, 10334640, 20669280]

約数ペア:

[(1, 20669280), (2, 10334640), (3, 6889760), (4, 5167320), (5, 4133856), (6, 3444880), (8, 2583660), (10, 2066928), (12, 1722440), (15, 1377952), (16, 1291830), (17, 1215840), (20, 1033464), (24, 861220), (30, 688976), (32, 645915), (34, 607920), (40, 516732), (48, 430610), (51, 405280), (60, 344488), (68, 303960), (80, 258366), (85, 243168), (96, 215305), (102, 202640), (120, 172244), (136, 151980), (149, 138720), (160, 129183), (170, 121584), (204, 101320), (240, 86122), (255, 81056), (272, 75990), (289, 71520), (298, 69360), (340, 60792), (408, 50660), (447, 46240), (480, 43061), (510, 40528), (544, 37995), (578, 35760), (596, 34680), (680, 30396), (745, 27744), (816, 25330), (867, 23840), (894, 23120), (1020, 20264), (1156, 17880), (1192, 17340), (1360, 15198), (1445, 14304), (1490, 13872), (1632, 12665), (1734, 11920), (1788, 11560), (2040, 10132), (2235, 9248), (2312, 8940), (2384, 8670), (2533, 8160), (2720, 7599), (2890, 7152), (2980, 6936), (3468, 5960), (3576, 5780), (4080, 5066), (4335, 4768), (4470, 4624)]