40690000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{313}}^1$

素因数の和:354

約数の個数: 100

約数和(自身を含む): 106431556

約数和(自身を除く): 65741556

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, 313, 325, 400, 500, 520, 625, 626, 650, 1000, 1040, 1250, 1252, 1300, 1565, 1625, 2000, 2500, 2504, 2600, 3130, 3250, 4069, 5000, 5008, 5200, 6260, 6500, 7825, 8125, 8138, 10000, 12520, 13000, 15650, 16250, 16276, 20345, 25040, 26000, 31300, 32500, 32552, 39125, 40690, 62600, 65000, 65104, 78250, 81380, 101725, 125200, 130000, 156500, 162760, 195625, 203450, 313000, 325520, 391250, 406900, 508625, 626000, 782500, 813800, 1017250, 1565000, 1627600, 2034500, 2543125, 3130000, 4069000, 5086250, 8138000, 10172500, 20345000, 40690000]

約数ペア:

[(1, 40690000), (2, 20345000), (4, 10172500), (5, 8138000), (8, 5086250), (10, 4069000), (13, 3130000), (16, 2543125), (20, 2034500), (25, 1627600), (26, 1565000), (40, 1017250), (50, 813800), (52, 782500), (65, 626000), (80, 508625), (100, 406900), (104, 391250), (125, 325520), (130, 313000), (200, 203450), (208, 195625), (250, 162760), (260, 156500), (313, 130000), (325, 125200), (400, 101725), (500, 81380), (520, 78250), (625, 65104), (626, 65000), (650, 62600), (1000, 40690), (1040, 39125), (1250, 32552), (1252, 32500), (1300, 31300), (1565, 26000), (1625, 25040), (2000, 20345), (2500, 16276), (2504, 16250), (2600, 15650), (3130, 13000), (3250, 12520), (4069, 10000), (5000, 8138), (5008, 8125), (5200, 7825), (6260, 6500)]