642403840

素因数分解:

$2^9\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:332

約数の個数: 160

約数和(自身を含む): 1684267200

約数和(自身を除く): 1041863360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 97, 104, 128, 130, 160, 194, 199, 208, 256, 260, 320, 388, 398, 416, 485, 512, 520, 640, 776, 796, 832, 970, 995, 1040, 1261, 1280, 1552, 1592, 1664, 1940, 1990, 2080, 2522, 2560, 2587, 3104, 3184, 3328, 3880, 3980, 4160, 5044, 5174, 6208, 6305, 6368, 6656, 7760, 7960, 8320, 10088, 10348, 12416, 12610, 12736, 12935, 15520, 15920, 16640, 19303, 20176, 20696, 24832, 25220, 25472, 25870, 31040, 31840, 33280, 38606, 40352, 41392, 49664, 50440, 50944, 51740, 62080, 63680, 77212, 80704, 82784, 96515, 100880, 101888, 103480, 124160, 127360, 154424, 161408, 165568, 193030, 201760, 206960, 248320, 250939, 254720, 308848, 322816, 331136, 386060, 403520, 413920, 501878, 509440, 617696, 645632, 662272, 772120, 807040, 827840, 1003756, 1235392, 1254695, 1324544, 1544240, 1614080, 1655680, 2007512, 2470784, 2509390, 3088480, 3228160, 3311360, 4015024, 4941568, 5018780, 6176960, 6622720, 8030048, 9883136, 10037560, 12353920, 16060096, 20075120, 24707840, 32120192, 40150240, 49415680, 64240384, 80300480, 128480768, 160600960, 321201920, 642403840]

約数ペア:

[(1, 642403840), (2, 321201920), (4, 160600960), (5, 128480768), (8, 80300480), (10, 64240384), (13, 49415680), (16, 40150240), (20, 32120192), (26, 24707840), (32, 20075120), (40, 16060096), (52, 12353920), (64, 10037560), (65, 9883136), (80, 8030048), (97, 6622720), (104, 6176960), (128, 5018780), (130, 4941568), (160, 4015024), (194, 3311360), (199, 3228160), (208, 3088480), (256, 2509390), (260, 2470784), (320, 2007512), (388, 1655680), (398, 1614080), (416, 1544240), (485, 1324544), (512, 1254695), (520, 1235392), (640, 1003756), (776, 827840), (796, 807040), (832, 772120), (970, 662272), (995, 645632), (1040, 617696), (1261, 509440), (1280, 501878), (1552, 413920), (1592, 403520), (1664, 386060), (1940, 331136), (1990, 322816), (2080, 308848), (2522, 254720), (2560, 250939), (2587, 248320), (3104, 206960), (3184, 201760), (3328, 193030), (3880, 165568), (3980, 161408), (4160, 154424), (5044, 127360), (5174, 124160), (6208, 103480), (6305, 101888), (6368, 100880), (6656, 96515), (7760, 82784), (7960, 80704), (8320, 77212), (10088, 63680), (10348, 62080), (12416, 51740), (12610, 50944), (12736, 50440), (12935, 49664), (15520, 41392), (15920, 40352), (16640, 38606), (19303, 33280), (20176, 31840), (20696, 31040), (24832, 25870), (25220, 25472)]