642068560

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{23399}}^1$

素因数の和:23433

約数の個数: 80

約数和(自身を含む): 1740960000

約数和(自身を除く): 1098891440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 5488, 6860, 13720, 23399, 27440, 46798, 93596, 116995, 163793, 187192, 233990, 327586, 374384, 467980, 655172, 818965, 935960, 1146551, 1310344, 1637930, 1871920, 2293102, 2620688, 3275860, 4586204, 5732755, 6551720, 8025857, 9172408, 11465510, 13103440, 16051714, 18344816, 22931020, 32103428, 40129285, 45862040, 64206856, 80258570, 91724080, 128413712, 160517140, 321034280, 642068560]

約数ペア:

[(1, 642068560), (2, 321034280), (4, 160517140), (5, 128413712), (7, 91724080), (8, 80258570), (10, 64206856), (14, 45862040), (16, 40129285), (20, 32103428), (28, 22931020), (35, 18344816), (40, 16051714), (49, 13103440), (56, 11465510), (70, 9172408), (80, 8025857), (98, 6551720), (112, 5732755), (140, 4586204), (196, 3275860), (245, 2620688), (280, 2293102), (343, 1871920), (392, 1637930), (490, 1310344), (560, 1146551), (686, 935960), (784, 818965), (980, 655172), (1372, 467980), (1715, 374384), (1960, 327586), (2744, 233990), (3430, 187192), (3920, 163793), (5488, 116995), (6860, 93596), (13720, 46798), (23399, 27440)]