51809550

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{163}}^2$

素因数の和:354

約数の個数: 72

約数和(自身を含む): 139225464

約数和(自身を除く): 87415914

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 163, 195, 325, 326, 390, 489, 650, 815, 975, 978, 1630, 1950, 2119, 2445, 4075, 4238, 4890, 6357, 8150, 10595, 12225, 12714, 21190, 24450, 26569, 31785, 52975, 53138, 63570, 79707, 105950, 132845, 158925, 159414, 265690, 317850, 345397, 398535, 664225, 690794, 797070, 1036191, 1328450, 1726985, 1992675, 2072382, 3453970, 3985350, 5180955, 8634925, 10361910, 17269850, 25904775, 51809550]

約数ペア:

[(1, 51809550), (2, 25904775), (3, 17269850), (5, 10361910), (6, 8634925), (10, 5180955), (13, 3985350), (15, 3453970), (25, 2072382), (26, 1992675), (30, 1726985), (39, 1328450), (50, 1036191), (65, 797070), (75, 690794), (78, 664225), (130, 398535), (150, 345397), (163, 317850), (195, 265690), (325, 159414), (326, 158925), (390, 132845), (489, 105950), (650, 79707), (815, 63570), (975, 53138), (978, 52975), (1630, 31785), (1950, 26569), (2119, 24450), (2445, 21190), (4075, 12714), (4238, 12225), (4890, 10595), (6357, 8150)]