65650000

素因数分解:

$2^4\times 5^5\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:147

約数の個数: 120

約数和(自身を含む): 172910808

約数和(自身を除く): 107260808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 101, 104, 125, 130, 200, 202, 208, 250, 260, 325, 400, 404, 500, 505, 520, 625, 650, 808, 1000, 1010, 1040, 1250, 1300, 1313, 1616, 1625, 2000, 2020, 2500, 2525, 2600, 2626, 3125, 3250, 4040, 5000, 5050, 5200, 5252, 6250, 6500, 6565, 8080, 8125, 10000, 10100, 10504, 12500, 12625, 13000, 13130, 16250, 20200, 21008, 25000, 25250, 26000, 26260, 32500, 32825, 40400, 40625, 50000, 50500, 52520, 63125, 65000, 65650, 81250, 101000, 105040, 126250, 130000, 131300, 162500, 164125, 202000, 252500, 262600, 315625, 325000, 328250, 505000, 525200, 631250, 650000, 656500, 820625, 1010000, 1262500, 1313000, 1641250, 2525000, 2626000, 3282500, 4103125, 5050000, 6565000, 8206250, 13130000, 16412500, 32825000, 65650000]

約数ペア:

[(1, 65650000), (2, 32825000), (4, 16412500), (5, 13130000), (8, 8206250), (10, 6565000), (13, 5050000), (16, 4103125), (20, 3282500), (25, 2626000), (26, 2525000), (40, 1641250), (50, 1313000), (52, 1262500), (65, 1010000), (80, 820625), (100, 656500), (101, 650000), (104, 631250), (125, 525200), (130, 505000), (200, 328250), (202, 325000), (208, 315625), (250, 262600), (260, 252500), (325, 202000), (400, 164125), (404, 162500), (500, 131300), (505, 130000), (520, 126250), (625, 105040), (650, 101000), (808, 81250), (1000, 65650), (1010, 65000), (1040, 63125), (1250, 52520), (1300, 50500), (1313, 50000), (1616, 40625), (1625, 40400), (2000, 32825), (2020, 32500), (2500, 26260), (2525, 26000), (2600, 25250), (2626, 25000), (3125, 21008), (3250, 20200), (4040, 16250), (5000, 13130), (5050, 13000), (5200, 12625), (5252, 12500), (6250, 10504), (6500, 10100), (6565, 10000), (8080, 8125)]