646234840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:437

約数の個数: 128

約数和(自身を含む): 1603800000

約数和(自身を除く): 957565160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 38, 40, 58, 76, 95, 109, 116, 145, 152, 190, 218, 232, 269, 290, 380, 436, 538, 545, 551, 580, 760, 872, 1076, 1090, 1102, 1160, 1345, 2071, 2152, 2180, 2204, 2690, 2755, 3161, 4142, 4360, 4408, 5111, 5380, 5510, 6322, 7801, 8284, 10222, 10355, 10760, 11020, 12644, 15602, 15805, 16568, 20444, 20710, 22040, 25288, 25555, 29321, 31204, 31610, 39005, 40888, 41420, 51110, 58642, 60059, 62408, 63220, 78010, 82840, 102220, 117284, 120118, 126440, 146605, 148219, 156020, 204440, 234568, 240236, 293210, 296438, 300295, 312040, 480472, 557099, 586420, 592876, 600590, 741095, 850309, 1114198, 1172840, 1185752, 1201180, 1482190, 1700618, 2228396, 2402360, 2785495, 2964380, 3401236, 4251545, 4456792, 5570990, 5928760, 6802472, 8503090, 11141980, 16155871, 17006180, 22283960, 32311742, 34012360, 64623484, 80779355, 129246968, 161558710, 323117420, 646234840]

約数ペア:

[(1, 646234840), (2, 323117420), (4, 161558710), (5, 129246968), (8, 80779355), (10, 64623484), (19, 34012360), (20, 32311742), (29, 22283960), (38, 17006180), (40, 16155871), (58, 11141980), (76, 8503090), (95, 6802472), (109, 5928760), (116, 5570990), (145, 4456792), (152, 4251545), (190, 3401236), (218, 2964380), (232, 2785495), (269, 2402360), (290, 2228396), (380, 1700618), (436, 1482190), (538, 1201180), (545, 1185752), (551, 1172840), (580, 1114198), (760, 850309), (872, 741095), (1076, 600590), (1090, 592876), (1102, 586420), (1160, 557099), (1345, 480472), (2071, 312040), (2152, 300295), (2180, 296438), (2204, 293210), (2690, 240236), (2755, 234568), (3161, 204440), (4142, 156020), (4360, 148219), (4408, 146605), (5111, 126440), (5380, 120118), (5510, 117284), (6322, 102220), (7801, 82840), (8284, 78010), (10222, 63220), (10355, 62408), (10760, 60059), (11020, 58642), (12644, 51110), (15602, 41420), (15805, 40888), (16568, 39005), (20444, 31610), (20710, 31204), (22040, 29321), (25288, 25555)]