78445400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:405

約数の個数: 96

約数和(自身を含む): 201080880

約数和(自身を除く): 122635480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 181, 197, 200, 220, 275, 362, 394, 440, 550, 724, 788, 905, 985, 1100, 1448, 1576, 1810, 1970, 1991, 2167, 2200, 3620, 3940, 3982, 4334, 4525, 4925, 7240, 7880, 7964, 8668, 9050, 9850, 9955, 10835, 15928, 17336, 18100, 19700, 19910, 21670, 35657, 36200, 39400, 39820, 43340, 49775, 54175, 71314, 79640, 86680, 99550, 108350, 142628, 178285, 199100, 216700, 285256, 356570, 392227, 398200, 433400, 713140, 784454, 891425, 1426280, 1568908, 1782850, 1961135, 3137816, 3565700, 3922270, 7131400, 7844540, 9805675, 15689080, 19611350, 39222700, 78445400]

約数ペア:

[(1, 78445400), (2, 39222700), (4, 19611350), (5, 15689080), (8, 9805675), (10, 7844540), (11, 7131400), (20, 3922270), (22, 3565700), (25, 3137816), (40, 1961135), (44, 1782850), (50, 1568908), (55, 1426280), (88, 891425), (100, 784454), (110, 713140), (181, 433400), (197, 398200), (200, 392227), (220, 356570), (275, 285256), (362, 216700), (394, 199100), (440, 178285), (550, 142628), (724, 108350), (788, 99550), (905, 86680), (985, 79640), (1100, 71314), (1448, 54175), (1576, 49775), (1810, 43340), (1970, 39820), (1991, 39400), (2167, 36200), (2200, 35657), (3620, 21670), (3940, 19910), (3982, 19700), (4334, 18100), (4525, 17336), (4925, 15928), (7240, 10835), (7880, 9955), (7964, 9850), (8668, 9050)]