678682225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 977421816

約数和(自身を除く): 298739591

約数列:

[1, 5, 13, 25, 31, 41, 53, 65, 155, 205, 265, 325, 403, 533, 689, 775, 961, 1025, 1271, 1325, 1643, 2015, 2173, 2665, 3445, 4805, 6355, 8215, 10075, 10865, 12493, 13325, 16523, 17225, 21359, 24025, 28249, 31775, 39401, 41075, 50933, 54325, 62465, 67363, 82615, 106795, 141245, 197005, 254665, 312325, 336815, 413075, 512213, 533975, 662129, 706225, 875719, 985025, 1273325, 1684075, 2088253, 2561065, 3310645, 4378595, 10441265, 12805325, 16553225, 21892975, 27147289, 52206325, 135736445, 678682225]

約数ペア:

[(1, 678682225), (5, 135736445), (13, 52206325), (25, 27147289), (31, 21892975), (41, 16553225), (53, 12805325), (65, 10441265), (155, 4378595), (205, 3310645), (265, 2561065), (325, 2088253), (403, 1684075), (533, 1273325), (689, 985025), (775, 875719), (961, 706225), (1025, 662129), (1271, 533975), (1325, 512213), (1643, 413075), (2015, 336815), (2173, 312325), (2665, 254665), (3445, 197005), (4805, 141245), (6355, 106795), (8215, 82615), (10075, 67363), (10865, 62465), (12493, 54325), (13325, 50933), (16523, 41075), (17225, 39401), (21359, 31775), (24025, 28249)]