39812500

素因数分解:

$2^2\times 5^6\times 7^2\times {\mathrm{13}}^1$

素因数の和:61

約数の個数: 126

約数和(自身を含む): 109100166

約数和(自身を除く): 69287666

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 49, 50, 52, 65, 70, 91, 98, 100, 125, 130, 140, 175, 182, 196, 245, 250, 260, 325, 350, 364, 455, 490, 500, 625, 637, 650, 700, 875, 910, 980, 1225, 1250, 1274, 1300, 1625, 1750, 1820, 2275, 2450, 2500, 2548, 3125, 3185, 3250, 3500, 4375, 4550, 4900, 6125, 6250, 6370, 6500, 8125, 8750, 9100, 11375, 12250, 12500, 12740, 15625, 15925, 16250, 17500, 21875, 22750, 24500, 30625, 31250, 31850, 32500, 40625, 43750, 45500, 56875, 61250, 62500, 63700, 79625, 81250, 87500, 109375, 113750, 122500, 153125, 159250, 162500, 203125, 218750, 227500, 284375, 306250, 318500, 398125, 406250, 437500, 568750, 612500, 765625, 796250, 812500, 1137500, 1421875, 1531250, 1592500, 1990625, 2843750, 3062500, 3981250, 5687500, 7962500, 9953125, 19906250, 39812500]

約数ペア:

[(1, 39812500), (2, 19906250), (4, 9953125), (5, 7962500), (7, 5687500), (10, 3981250), (13, 3062500), (14, 2843750), (20, 1990625), (25, 1592500), (26, 1531250), (28, 1421875), (35, 1137500), (49, 812500), (50, 796250), (52, 765625), (65, 612500), (70, 568750), (91, 437500), (98, 406250), (100, 398125), (125, 318500), (130, 306250), (140, 284375), (175, 227500), (182, 218750), (196, 203125), (245, 162500), (250, 159250), (260, 153125), (325, 122500), (350, 113750), (364, 109375), (455, 87500), (490, 81250), (500, 79625), (625, 63700), (637, 62500), (650, 61250), (700, 56875), (875, 45500), (910, 43750), (980, 40625), (1225, 32500), (1250, 31850), (1274, 31250), (1300, 30625), (1625, 24500), (1750, 22750), (1820, 21875), (2275, 17500), (2450, 16250), (2500, 15925), (2548, 15625), (3125, 12740), (3185, 12500), (3250, 12250), (3500, 11375), (4375, 9100), (4550, 8750), (4900, 8125), (6125, 6500), (6250, 6370)]