642000700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:404

約数の個数: 144

約数和(自身を含む): 1597897728

約数和(自身を除く): 955897028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 31, 44, 50, 55, 62, 67, 100, 110, 124, 134, 155, 220, 268, 275, 281, 310, 335, 341, 550, 562, 620, 670, 682, 737, 775, 1100, 1124, 1340, 1364, 1405, 1474, 1550, 1675, 1705, 2077, 2810, 2948, 3091, 3100, 3350, 3410, 3685, 4154, 5620, 6182, 6700, 6820, 7025, 7370, 8308, 8525, 8711, 10385, 12364, 14050, 14740, 15455, 17050, 17422, 18425, 18827, 20770, 22847, 28100, 30910, 34100, 34844, 36850, 37654, 41540, 43555, 45694, 51925, 61820, 73700, 75308, 77275, 87110, 91388, 94135, 95821, 103850, 114235, 154550, 174220, 188270, 191642, 207097, 207700, 217775, 228470, 309100, 376540, 383284, 414194, 435550, 456940, 470675, 479105, 571175, 583637, 828388, 871100, 941350, 958210, 1035485, 1142350, 1167274, 1882700, 1916420, 2070970, 2284700, 2334548, 2395525, 2918185, 4141940, 4791050, 5177425, 5836370, 6420007, 9582100, 10354850, 11672740, 12840014, 14590925, 20709700, 25680028, 29181850, 32100035, 58363700, 64200070, 128400140, 160500175, 321000350, 642000700]

約数ペア:

[(1, 642000700), (2, 321000350), (4, 160500175), (5, 128400140), (10, 64200070), (11, 58363700), (20, 32100035), (22, 29181850), (25, 25680028), (31, 20709700), (44, 14590925), (50, 12840014), (55, 11672740), (62, 10354850), (67, 9582100), (100, 6420007), (110, 5836370), (124, 5177425), (134, 4791050), (155, 4141940), (220, 2918185), (268, 2395525), (275, 2334548), (281, 2284700), (310, 2070970), (335, 1916420), (341, 1882700), (550, 1167274), (562, 1142350), (620, 1035485), (670, 958210), (682, 941350), (737, 871100), (775, 828388), (1100, 583637), (1124, 571175), (1340, 479105), (1364, 470675), (1405, 456940), (1474, 435550), (1550, 414194), (1675, 383284), (1705, 376540), (2077, 309100), (2810, 228470), (2948, 217775), (3091, 207700), (3100, 207097), (3350, 191642), (3410, 188270), (3685, 174220), (4154, 154550), (5620, 114235), (6182, 103850), (6700, 95821), (6820, 94135), (7025, 91388), (7370, 87110), (8308, 77275), (8525, 75308), (8711, 73700), (10385, 61820), (12364, 51925), (14050, 45694), (14740, 43555), (15455, 41540), (17050, 37654), (17422, 36850), (18425, 34844), (18827, 34100), (20770, 30910), (22847, 28100)]