20345760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 50415840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 71, 72, 80, 90, 96, 120, 142, 144, 160, 180, 199, 213, 240, 284, 288, 355, 360, 398, 426, 480, 568, 597, 639, 710, 720, 796, 852, 995, 1065, 1136, 1194, 1278, 1420, 1440, 1592, 1704, 1791, 1990, 2130, 2272, 2388, 2556, 2840, 2985, 3184, 3195, 3408, 3582, 3980, 4260, 4776, 5112, 5680, 5970, 6368, 6390, 6816, 7164, 7960, 8520, 8955, 9552, 10224, 11360, 11940, 12780, 14129, 14328, 15920, 17040, 17910, 19104, 20448, 23880, 25560, 28258, 28656, 31840, 34080, 35820, 42387, 47760, 51120, 56516, 57312, 70645, 71640, 84774, 95520, 102240, 113032, 127161, 141290, 143280, 169548, 211935, 226064, 254322, 282580, 286560, 339096, 423870, 452128, 508644, 565160, 635805, 678192, 847740, 1017288, 1130320, 1271610, 1356384, 1695480, 2034576, 2260640, 2543220, 3390960, 4069152, 5086440, 6781920, 10172880, 20345760]

約数ペア:

[(1, 20345760), (2, 10172880), (3, 6781920), (4, 5086440), (5, 4069152), (6, 3390960), (8, 2543220), (9, 2260640), (10, 2034576), (12, 1695480), (15, 1356384), (16, 1271610), (18, 1130320), (20, 1017288), (24, 847740), (30, 678192), (32, 635805), (36, 565160), (40, 508644), (45, 452128), (48, 423870), (60, 339096), (71, 286560), (72, 282580), (80, 254322), (90, 226064), (96, 211935), (120, 169548), (142, 143280), (144, 141290), (160, 127161), (180, 113032), (199, 102240), (213, 95520), (240, 84774), (284, 71640), (288, 70645), (355, 57312), (360, 56516), (398, 51120), (426, 47760), (480, 42387), (568, 35820), (597, 34080), (639, 31840), (710, 28656), (720, 28258), (796, 25560), (852, 23880), (995, 20448), (1065, 19104), (1136, 17910), (1194, 17040), (1278, 15920), (1420, 14328), (1440, 14129), (1592, 12780), (1704, 11940), (1791, 11360), (1990, 10224), (2130, 9552), (2272, 8955), (2388, 8520), (2556, 7960), (2840, 7164), (2985, 6816), (3184, 6390), (3195, 6368), (3408, 5970), (3582, 5680), (3980, 5112), (4260, 4776)]