28180880

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 160

約数和(自身を含む): 83328000

約数和(自身を除く): 55147120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 79, 80, 91, 98, 104, 112, 130, 140, 158, 182, 196, 208, 245, 260, 280, 316, 343, 364, 392, 395, 455, 490, 520, 553, 560, 632, 637, 686, 728, 784, 790, 910, 980, 1027, 1040, 1106, 1264, 1274, 1372, 1456, 1580, 1715, 1820, 1960, 2054, 2212, 2548, 2744, 2765, 3160, 3185, 3430, 3640, 3871, 3920, 4108, 4424, 4459, 5096, 5135, 5488, 5530, 6320, 6370, 6860, 7189, 7280, 7742, 8216, 8848, 8918, 10192, 10270, 11060, 12740, 13720, 14378, 15484, 16432, 17836, 19355, 20540, 22120, 22295, 25480, 27097, 27440, 28756, 30968, 35672, 35945, 38710, 41080, 44240, 44590, 50323, 50960, 54194, 57512, 61936, 71344, 71890, 77420, 82160, 89180, 100646, 108388, 115024, 135485, 143780, 154840, 178360, 201292, 216776, 251615, 270970, 287560, 309680, 352261, 356720, 402584, 433552, 503230, 541940, 575120, 704522, 805168, 1006460, 1083880, 1409044, 1761305, 2012920, 2167760, 2818088, 3522610, 4025840, 5636176, 7045220, 14090440, 28180880]

約数ペア:

[(1, 28180880), (2, 14090440), (4, 7045220), (5, 5636176), (7, 4025840), (8, 3522610), (10, 2818088), (13, 2167760), (14, 2012920), (16, 1761305), (20, 1409044), (26, 1083880), (28, 1006460), (35, 805168), (40, 704522), (49, 575120), (52, 541940), (56, 503230), (65, 433552), (70, 402584), (79, 356720), (80, 352261), (91, 309680), (98, 287560), (104, 270970), (112, 251615), (130, 216776), (140, 201292), (158, 178360), (182, 154840), (196, 143780), (208, 135485), (245, 115024), (260, 108388), (280, 100646), (316, 89180), (343, 82160), (364, 77420), (392, 71890), (395, 71344), (455, 61936), (490, 57512), (520, 54194), (553, 50960), (560, 50323), (632, 44590), (637, 44240), (686, 41080), (728, 38710), (784, 35945), (790, 35672), (910, 30968), (980, 28756), (1027, 27440), (1040, 27097), (1106, 25480), (1264, 22295), (1274, 22120), (1372, 20540), (1456, 19355), (1580, 17836), (1715, 16432), (1820, 15484), (1960, 14378), (2054, 13720), (2212, 12740), (2548, 11060), (2744, 10270), (2765, 10192), (3160, 8918), (3185, 8848), (3430, 8216), (3640, 7742), (3871, 7280), (3920, 7189), (4108, 6860), (4424, 6370), (4459, 6320), (5096, 5530), (5135, 5488)]