80828720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 160

約数和(自身を含む): 227985408

約数和(自身を除く): 147156688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 47, 56, 70, 74, 80, 83, 94, 112, 140, 148, 166, 185, 188, 235, 259, 280, 296, 329, 332, 370, 376, 415, 470, 518, 560, 581, 592, 658, 664, 740, 752, 830, 940, 1036, 1162, 1295, 1316, 1328, 1480, 1645, 1660, 1739, 1880, 2072, 2324, 2590, 2632, 2905, 2960, 3071, 3290, 3320, 3478, 3760, 3901, 4144, 4648, 5180, 5264, 5810, 6142, 6580, 6640, 6956, 7802, 8695, 9296, 10360, 11620, 12173, 12284, 13160, 13912, 15355, 15604, 17390, 19505, 20720, 21497, 23240, 24346, 24568, 26320, 27307, 27824, 30710, 31208, 34780, 39010, 42994, 46480, 48692, 49136, 54614, 60865, 61420, 62416, 69560, 78020, 85988, 97384, 107485, 109228, 121730, 122840, 136535, 139120, 144337, 156040, 171976, 194768, 214970, 218456, 243460, 245680, 273070, 288674, 312080, 343952, 429940, 436912, 486920, 546140, 577348, 721685, 859880, 973840, 1010359, 1092280, 1154696, 1443370, 1719760, 2020718, 2184560, 2309392, 2886740, 4041436, 5051795, 5773480, 8082872, 10103590, 11546960, 16165744, 20207180, 40414360, 80828720]

約数ペア:

[(1, 80828720), (2, 40414360), (4, 20207180), (5, 16165744), (7, 11546960), (8, 10103590), (10, 8082872), (14, 5773480), (16, 5051795), (20, 4041436), (28, 2886740), (35, 2309392), (37, 2184560), (40, 2020718), (47, 1719760), (56, 1443370), (70, 1154696), (74, 1092280), (80, 1010359), (83, 973840), (94, 859880), (112, 721685), (140, 577348), (148, 546140), (166, 486920), (185, 436912), (188, 429940), (235, 343952), (259, 312080), (280, 288674), (296, 273070), (329, 245680), (332, 243460), (370, 218456), (376, 214970), (415, 194768), (470, 171976), (518, 156040), (560, 144337), (581, 139120), (592, 136535), (658, 122840), (664, 121730), (740, 109228), (752, 107485), (830, 97384), (940, 85988), (1036, 78020), (1162, 69560), (1295, 62416), (1316, 61420), (1328, 60865), (1480, 54614), (1645, 49136), (1660, 48692), (1739, 46480), (1880, 42994), (2072, 39010), (2324, 34780), (2590, 31208), (2632, 30710), (2905, 27824), (2960, 27307), (3071, 26320), (3290, 24568), (3320, 24346), (3478, 23240), (3760, 21497), (3901, 20720), (4144, 19505), (4648, 17390), (5180, 15604), (5264, 15355), (5810, 13912), (6142, 13160), (6580, 12284), (6640, 12173), (6956, 11620), (7802, 10360), (8695, 9296)]