81619860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{521}}^1$

素因数の和:913

約数の個数: 96

約数和(自身を含む): 262386432

約数和(自身を除く): 180766572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 373, 420, 521, 746, 1042, 1119, 1492, 1563, 1865, 2084, 2238, 2605, 2611, 3126, 3647, 3730, 4476, 5210, 5222, 5595, 6252, 7294, 7460, 7815, 7833, 10420, 10444, 10941, 11190, 13055, 14588, 15630, 15666, 18235, 21882, 22380, 26110, 31260, 31332, 36470, 39165, 43764, 52220, 54705, 72940, 78330, 109410, 156660, 194333, 218820, 388666, 582999, 777332, 971665, 1165998, 1360331, 1943330, 2331996, 2720662, 2914995, 3886660, 4080993, 5441324, 5829990, 6801655, 8161986, 11659980, 13603310, 16323972, 20404965, 27206620, 40809930, 81619860]

約数ペア:

[(1, 81619860), (2, 40809930), (3, 27206620), (4, 20404965), (5, 16323972), (6, 13603310), (7, 11659980), (10, 8161986), (12, 6801655), (14, 5829990), (15, 5441324), (20, 4080993), (21, 3886660), (28, 2914995), (30, 2720662), (35, 2331996), (42, 1943330), (60, 1360331), (70, 1165998), (84, 971665), (105, 777332), (140, 582999), (210, 388666), (373, 218820), (420, 194333), (521, 156660), (746, 109410), (1042, 78330), (1119, 72940), (1492, 54705), (1563, 52220), (1865, 43764), (2084, 39165), (2238, 36470), (2605, 31332), (2611, 31260), (3126, 26110), (3647, 22380), (3730, 21882), (4476, 18235), (5210, 15666), (5222, 15630), (5595, 14588), (6252, 13055), (7294, 11190), (7460, 10941), (7815, 10444), (7833, 10420)]