257020440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:489

約数の個数: 128

約数和(自身を含む): 794880000

約数和(自身を除く): 537859560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 47, 60, 94, 120, 141, 188, 199, 229, 235, 282, 376, 398, 458, 470, 564, 597, 687, 705, 796, 916, 940, 995, 1128, 1145, 1194, 1374, 1410, 1592, 1832, 1880, 1990, 2290, 2388, 2748, 2820, 2985, 3435, 3980, 4580, 4776, 5496, 5640, 5970, 6870, 7960, 9160, 9353, 10763, 11940, 13740, 18706, 21526, 23880, 27480, 28059, 32289, 37412, 43052, 45571, 46765, 53815, 56118, 64578, 74824, 86104, 91142, 93530, 107630, 112236, 129156, 136713, 140295, 161445, 182284, 187060, 215260, 224472, 227855, 258312, 273426, 280590, 322890, 364568, 374120, 430520, 455710, 546852, 561180, 645780, 683565, 911420, 1093704, 1122360, 1291560, 1367130, 1822840, 2141837, 2734260, 4283674, 5468520, 6425511, 8567348, 10709185, 12851022, 17134696, 21418370, 25702044, 32127555, 42836740, 51404088, 64255110, 85673480, 128510220, 257020440]

約数ペア:

[(1, 257020440), (2, 128510220), (3, 85673480), (4, 64255110), (5, 51404088), (6, 42836740), (8, 32127555), (10, 25702044), (12, 21418370), (15, 17134696), (20, 12851022), (24, 10709185), (30, 8567348), (40, 6425511), (47, 5468520), (60, 4283674), (94, 2734260), (120, 2141837), (141, 1822840), (188, 1367130), (199, 1291560), (229, 1122360), (235, 1093704), (282, 911420), (376, 683565), (398, 645780), (458, 561180), (470, 546852), (564, 455710), (597, 430520), (687, 374120), (705, 364568), (796, 322890), (916, 280590), (940, 273426), (995, 258312), (1128, 227855), (1145, 224472), (1194, 215260), (1374, 187060), (1410, 182284), (1592, 161445), (1832, 140295), (1880, 136713), (1990, 129156), (2290, 112236), (2388, 107630), (2748, 93530), (2820, 91142), (2985, 86104), (3435, 74824), (3980, 64578), (4580, 56118), (4776, 53815), (5496, 46765), (5640, 45571), (5970, 43052), (6870, 37412), (7960, 32289), (9160, 28059), (9353, 27480), (10763, 23880), (11940, 21526), (13740, 18706)]