78910000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:648

約数の個数: 100

約数和(自身を含む): 206084032

約数和(自身を除く): 127174032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 125, 130, 200, 208, 250, 260, 325, 400, 500, 520, 607, 625, 650, 1000, 1040, 1214, 1250, 1300, 1625, 2000, 2428, 2500, 2600, 3035, 3250, 4856, 5000, 5200, 6070, 6500, 7891, 8125, 9712, 10000, 12140, 13000, 15175, 15782, 16250, 24280, 26000, 30350, 31564, 32500, 39455, 48560, 60700, 63128, 65000, 75875, 78910, 121400, 126256, 130000, 151750, 157820, 197275, 242800, 303500, 315640, 379375, 394550, 607000, 631280, 758750, 789100, 986375, 1214000, 1517500, 1578200, 1972750, 3035000, 3156400, 3945500, 4931875, 6070000, 7891000, 9863750, 15782000, 19727500, 39455000, 78910000]

約数ペア:

[(1, 78910000), (2, 39455000), (4, 19727500), (5, 15782000), (8, 9863750), (10, 7891000), (13, 6070000), (16, 4931875), (20, 3945500), (25, 3156400), (26, 3035000), (40, 1972750), (50, 1578200), (52, 1517500), (65, 1214000), (80, 986375), (100, 789100), (104, 758750), (125, 631280), (130, 607000), (200, 394550), (208, 379375), (250, 315640), (260, 303500), (325, 242800), (400, 197275), (500, 157820), (520, 151750), (607, 130000), (625, 126256), (650, 121400), (1000, 78910), (1040, 75875), (1214, 65000), (1250, 63128), (1300, 60700), (1625, 48560), (2000, 39455), (2428, 32500), (2500, 31564), (2600, 30350), (3035, 26000), (3250, 24280), (4856, 16250), (5000, 15782), (5200, 15175), (6070, 13000), (6500, 12140), (7891, 10000), (8125, 9712)]