20387137280

素因数分解:

$2^8\times 5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{1511}}^1$

素因数の和:1742

約数の個数: 144

約数和(自身を含む): 49844035584

約数和(自身を除く): 29456898304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 83, 127, 128, 160, 166, 254, 256, 320, 332, 415, 508, 635, 640, 664, 830, 1016, 1270, 1280, 1328, 1511, 1660, 2032, 2540, 2656, 3022, 3320, 4064, 5080, 5312, 6044, 6640, 7555, 8128, 10160, 10541, 10624, 12088, 13280, 15110, 16256, 20320, 21082, 21248, 24176, 26560, 30220, 32512, 40640, 42164, 48352, 52705, 53120, 60440, 81280, 84328, 96704, 105410, 106240, 120880, 125413, 162560, 168656, 191897, 193408, 210820, 241760, 250826, 337312, 383794, 386816, 421640, 483520, 501652, 627065, 674624, 767588, 843280, 959485, 967040, 1003304, 1254130, 1349248, 1535176, 1686560, 1918970, 1934080, 2006608, 2508260, 2698496, 3070352, 3373120, 3837940, 4013216, 5016520, 6140704, 6746240, 7675880, 8026432, 10033040, 12281408, 13492480, 15351760, 15927451, 16052864, 20066080, 24562816, 30703520, 31854902, 32105728, 40132160, 49125632, 61407040, 63709804, 79637255, 80264320, 122814080, 127419608, 159274510, 160528640, 245628160, 254839216, 318549020, 509678432, 637098040, 1019356864, 1274196080, 2038713728, 2548392160, 4077427456, 5096784320, 10193568640, 20387137280]

約数ペア:

[(1, 20387137280), (2, 10193568640), (4, 5096784320), (5, 4077427456), (8, 2548392160), (10, 2038713728), (16, 1274196080), (20, 1019356864), (32, 637098040), (40, 509678432), (64, 318549020), (80, 254839216), (83, 245628160), (127, 160528640), (128, 159274510), (160, 127419608), (166, 122814080), (254, 80264320), (256, 79637255), (320, 63709804), (332, 61407040), (415, 49125632), (508, 40132160), (635, 32105728), (640, 31854902), (664, 30703520), (830, 24562816), (1016, 20066080), (1270, 16052864), (1280, 15927451), (1328, 15351760), (1511, 13492480), (1660, 12281408), (2032, 10033040), (2540, 8026432), (2656, 7675880), (3022, 6746240), (3320, 6140704), (4064, 5016520), (5080, 4013216), (5312, 3837940), (6044, 3373120), (6640, 3070352), (7555, 2698496), (8128, 2508260), (10160, 2006608), (10541, 1934080), (10624, 1918970), (12088, 1686560), (13280, 1535176), (15110, 1349248), (16256, 1254130), (20320, 1003304), (21082, 967040), (21248, 959485), (24176, 843280), (26560, 767588), (30220, 674624), (32512, 627065), (40640, 501652), (42164, 483520), (48352, 421640), (52705, 386816), (53120, 383794), (60440, 337312), (81280, 250826), (84328, 241760), (96704, 210820), (105410, 193408), (106240, 191897), (120880, 168656), (125413, 162560)]