64420480

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:258

約数の個数: 128

約数和(自身を含む): 169205760

約数和(自身を除く): 104785280

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, 272, 310, 320, 340, 382, 496, 527, 544, 620, 640, 680, 764, 955, 992, 1054, 1088, 1240, 1360, 1528, 1910, 1984, 2108, 2176, 2480, 2635, 2720, 3056, 3247, 3820, 3968, 4216, 4960, 5270, 5440, 5921, 6112, 6494, 7640, 8432, 9920, 10540, 10880, 11842, 12224, 12988, 15280, 16235, 16864, 19840, 21080, 23684, 24448, 25976, 29605, 30560, 32470, 33728, 42160, 47368, 51952, 59210, 61120, 64940, 67456, 84320, 94736, 100657, 103904, 118420, 122240, 129880, 168640, 189472, 201314, 207808, 236840, 259760, 337280, 378944, 402628, 415616, 473680, 503285, 519520, 757888, 805256, 947360, 1006570, 1039040, 1610512, 1894720, 2013140, 2078080, 3221024, 3789440, 4026280, 6442048, 8052560, 12884096, 16105120, 32210240, 64420480]

約数ペア:

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