128840960

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 339075072

約数和(自身を除く): 210234112

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 191, 248, 256, 272, 310, 320, 340, 382, 496, 527, 544, 620, 640, 680, 764, 955, 992, 1054, 1088, 1240, 1280, 1360, 1528, 1910, 1984, 2108, 2176, 2480, 2635, 2720, 3056, 3247, 3820, 3968, 4216, 4352, 4960, 5270, 5440, 5921, 6112, 6494, 7640, 7936, 8432, 9920, 10540, 10880, 11842, 12224, 12988, 15280, 16235, 16864, 19840, 21080, 21760, 23684, 24448, 25976, 29605, 30560, 32470, 33728, 39680, 42160, 47368, 48896, 51952, 59210, 61120, 64940, 67456, 84320, 94736, 100657, 103904, 118420, 122240, 129880, 134912, 168640, 189472, 201314, 207808, 236840, 244480, 259760, 337280, 378944, 402628, 415616, 473680, 503285, 519520, 674560, 757888, 805256, 831232, 947360, 1006570, 1039040, 1515776, 1610512, 1894720, 2013140, 2078080, 3221024, 3789440, 4026280, 4156160, 6442048, 7578880, 8052560, 12884096, 16105120, 25768192, 32210240, 64420480, 128840960]

約数ペア:

[(1, 128840960), (2, 64420480), (4, 32210240), (5, 25768192), (8, 16105120), (10, 12884096), (16, 8052560), (17, 7578880), (20, 6442048), (31, 4156160), (32, 4026280), (34, 3789440), (40, 3221024), (62, 2078080), (64, 2013140), (68, 1894720), (80, 1610512), (85, 1515776), (124, 1039040), (128, 1006570), (136, 947360), (155, 831232), (160, 805256), (170, 757888), (191, 674560), (248, 519520), (256, 503285), (272, 473680), (310, 415616), (320, 402628), (340, 378944), (382, 337280), (496, 259760), (527, 244480), (544, 236840), (620, 207808), (640, 201314), (680, 189472), (764, 168640), (955, 134912), (992, 129880), (1054, 122240), (1088, 118420), (1240, 103904), (1280, 100657), (1360, 94736), (1528, 84320), (1910, 67456), (1984, 64940), (2108, 61120), (2176, 59210), (2480, 51952), (2635, 48896), (2720, 47368), (3056, 42160), (3247, 39680), (3820, 33728), (3968, 32470), (4216, 30560), (4352, 29605), (4960, 25976), (5270, 24448), (5440, 23684), (5921, 21760), (6112, 21080), (6494, 19840), (7640, 16864), (7936, 16235), (8432, 15280), (9920, 12988), (10540, 12224), (10880, 11842)]