51122500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:72

約数の個数: 135

約数和(自身を含む): 133061313

約数和(自身を除く): 81938813

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 121, 125, 130, 143, 169, 220, 242, 250, 260, 275, 286, 325, 338, 484, 500, 550, 572, 605, 625, 650, 676, 715, 845, 1100, 1210, 1250, 1300, 1375, 1430, 1573, 1625, 1690, 1859, 2420, 2500, 2750, 2860, 3025, 3146, 3250, 3380, 3575, 3718, 4225, 5500, 6050, 6292, 6500, 6875, 7150, 7436, 7865, 8125, 8450, 9295, 12100, 13750, 14300, 15125, 15730, 16250, 16900, 17875, 18590, 20449, 21125, 27500, 30250, 31460, 32500, 35750, 37180, 39325, 40898, 42250, 46475, 60500, 71500, 75625, 78650, 81796, 84500, 89375, 92950, 102245, 105625, 151250, 157300, 178750, 185900, 196625, 204490, 211250, 232375, 302500, 357500, 393250, 408980, 422500, 464750, 511225, 786500, 929500, 983125, 1022450, 1161875, 1966250, 2044900, 2323750, 2556125, 3932500, 4647500, 5112250, 10224500, 12780625, 25561250, 51122500]

約数ペア:

[(1, 51122500), (2, 25561250), (4, 12780625), (5, 10224500), (10, 5112250), (11, 4647500), (13, 3932500), (20, 2556125), (22, 2323750), (25, 2044900), (26, 1966250), (44, 1161875), (50, 1022450), (52, 983125), (55, 929500), (65, 786500), (100, 511225), (110, 464750), (121, 422500), (125, 408980), (130, 393250), (143, 357500), (169, 302500), (220, 232375), (242, 211250), (250, 204490), (260, 196625), (275, 185900), (286, 178750), (325, 157300), (338, 151250), (484, 105625), (500, 102245), (550, 92950), (572, 89375), (605, 84500), (625, 81796), (650, 78650), (676, 75625), (715, 71500), (845, 60500), (1100, 46475), (1210, 42250), (1250, 40898), (1300, 39325), (1375, 37180), (1430, 35750), (1573, 32500), (1625, 31460), (1690, 30250), (1859, 27500), (2420, 21125), (2500, 20449), (2750, 18590), (2860, 17875), (3025, 16900), (3146, 16250), (3250, 15730), (3380, 15125), (3575, 14300), (3718, 13750), (4225, 12100), (5500, 9295), (6050, 8450), (6292, 8125), (6500, 7865), (6875, 7436)]