261315216

素因数分解:

$2^4\times 3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:565

約数の個数: 120

約数和(自身を含む): 755576640

約数和(自身を除く): 494261424

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 61, 71, 72, 122, 142, 144, 183, 213, 244, 284, 366, 419, 426, 488, 549, 568, 639, 732, 838, 852, 976, 1098, 1136, 1257, 1278, 1464, 1676, 1704, 2196, 2514, 2556, 2928, 3352, 3408, 3771, 4331, 4392, 5028, 5112, 6704, 7542, 8662, 8784, 10056, 10224, 12993, 15084, 17324, 20112, 25559, 25986, 29749, 30168, 34648, 38979, 51118, 51972, 59498, 60336, 69296, 76677, 77958, 89247, 102236, 103944, 118996, 153354, 155916, 178494, 204472, 207888, 230031, 237992, 267741, 306708, 311832, 356988, 408944, 460062, 475984, 535482, 613416, 623664, 713976, 920124, 1070964, 1226832, 1427952, 1814689, 1840248, 2141928, 3629378, 3680496, 4283856, 5444067, 7258756, 10888134, 14517512, 16332201, 21776268, 29035024, 32664402, 43552536, 65328804, 87105072, 130657608, 261315216]

約数ペア:

[(1, 261315216), (2, 130657608), (3, 87105072), (4, 65328804), (6, 43552536), (8, 32664402), (9, 29035024), (12, 21776268), (16, 16332201), (18, 14517512), (24, 10888134), (36, 7258756), (48, 5444067), (61, 4283856), (71, 3680496), (72, 3629378), (122, 2141928), (142, 1840248), (144, 1814689), (183, 1427952), (213, 1226832), (244, 1070964), (284, 920124), (366, 713976), (419, 623664), (426, 613416), (488, 535482), (549, 475984), (568, 460062), (639, 408944), (732, 356988), (838, 311832), (852, 306708), (976, 267741), (1098, 237992), (1136, 230031), (1257, 207888), (1278, 204472), (1464, 178494), (1676, 155916), (1704, 153354), (2196, 118996), (2514, 103944), (2556, 102236), (2928, 89247), (3352, 77958), (3408, 76677), (3771, 69296), (4331, 60336), (4392, 59498), (5028, 51972), (5112, 51118), (6704, 38979), (7542, 34648), (8662, 30168), (8784, 29749), (10056, 25986), (10224, 25559), (12993, 20112), (15084, 17324)]