18850000

素因数分解:

$2^4\times 5^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1$

素因数の和:75

約数の個数: 120

約数和(自身を含む): 50856120

約数和(自身を除く): 32006120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 29, 40, 50, 52, 58, 65, 80, 100, 104, 116, 125, 130, 145, 200, 208, 232, 250, 260, 290, 325, 377, 400, 464, 500, 520, 580, 625, 650, 725, 754, 1000, 1040, 1160, 1250, 1300, 1450, 1508, 1625, 1885, 2000, 2320, 2500, 2600, 2900, 3016, 3125, 3250, 3625, 3770, 5000, 5200, 5800, 6032, 6250, 6500, 7250, 7540, 8125, 9425, 10000, 11600, 12500, 13000, 14500, 15080, 16250, 18125, 18850, 25000, 26000, 29000, 30160, 32500, 36250, 37700, 40625, 47125, 50000, 58000, 65000, 72500, 75400, 81250, 90625, 94250, 130000, 145000, 150800, 162500, 181250, 188500, 235625, 290000, 325000, 362500, 377000, 471250, 650000, 725000, 754000, 942500, 1178125, 1450000, 1885000, 2356250, 3770000, 4712500, 9425000, 18850000]

約数ペア:

[(1, 18850000), (2, 9425000), (4, 4712500), (5, 3770000), (8, 2356250), (10, 1885000), (13, 1450000), (16, 1178125), (20, 942500), (25, 754000), (26, 725000), (29, 650000), (40, 471250), (50, 377000), (52, 362500), (58, 325000), (65, 290000), (80, 235625), (100, 188500), (104, 181250), (116, 162500), (125, 150800), (130, 145000), (145, 130000), (200, 94250), (208, 90625), (232, 81250), (250, 75400), (260, 72500), (290, 65000), (325, 58000), (377, 50000), (400, 47125), (464, 40625), (500, 37700), (520, 36250), (580, 32500), (625, 30160), (650, 29000), (725, 26000), (754, 25000), (1000, 18850), (1040, 18125), (1160, 16250), (1250, 15080), (1300, 14500), (1450, 13000), (1508, 12500), (1625, 11600), (1885, 10000), (2000, 9425), (2320, 8125), (2500, 7540), (2600, 7250), (2900, 6500), (3016, 6250), (3125, 6032), (3250, 5800), (3625, 5200), (3770, 5000)]