19906250

素因数分解:

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

素因数の和:59

約数の個数: 84

約数和(自身を含む): 46757214

約数和(自身を除く): 26850964

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 125, 130, 175, 182, 245, 250, 325, 350, 455, 490, 625, 637, 650, 875, 910, 1225, 1250, 1274, 1625, 1750, 2275, 2450, 3125, 3185, 3250, 4375, 4550, 6125, 6250, 6370, 8125, 8750, 11375, 12250, 15625, 15925, 16250, 21875, 22750, 30625, 31250, 31850, 40625, 43750, 56875, 61250, 79625, 81250, 109375, 113750, 153125, 159250, 203125, 218750, 284375, 306250, 398125, 406250, 568750, 765625, 796250, 1421875, 1531250, 1990625, 2843750, 3981250, 9953125, 19906250]

約数ペア:

[(1, 19906250), (2, 9953125), (5, 3981250), (7, 2843750), (10, 1990625), (13, 1531250), (14, 1421875), (25, 796250), (26, 765625), (35, 568750), (49, 406250), (50, 398125), (65, 306250), (70, 284375), (91, 218750), (98, 203125), (125, 159250), (130, 153125), (175, 113750), (182, 109375), (245, 81250), (250, 79625), (325, 61250), (350, 56875), (455, 43750), (490, 40625), (625, 31850), (637, 31250), (650, 30625), (875, 22750), (910, 21875), (1225, 16250), (1250, 15925), (1274, 15625), (1625, 12250), (1750, 11375), (2275, 8750), (2450, 8125), (3125, 6370), (3185, 6250), (3250, 6125), (4375, 4550)]