72180801

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:264

約数の個数: 80

約数和(自身を含む): 137161728

約数和(自身を除く): 64980927

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 71, 77, 81, 99, 163, 189, 213, 231, 297, 489, 497, 567, 639, 693, 781, 891, 1141, 1467, 1491, 1793, 1917, 2079, 2343, 3423, 4401, 4473, 5379, 5467, 5751, 6237, 7029, 10269, 11573, 12551, 13203, 13419, 16137, 16401, 21087, 30807, 34719, 37653, 40257, 48411, 49203, 63261, 81011, 92421, 104157, 112959, 127303, 145233, 147609, 243033, 312471, 338877, 381909, 442827, 729099, 891121, 937413, 1016631, 1145727, 2187297, 2673363, 3437181, 6561891, 8020089, 10311543, 24060267, 72180801]

約数ペア:

[(1, 72180801), (3, 24060267), (7, 10311543), (9, 8020089), (11, 6561891), (21, 3437181), (27, 2673363), (33, 2187297), (63, 1145727), (71, 1016631), (77, 937413), (81, 891121), (99, 729099), (163, 442827), (189, 381909), (213, 338877), (231, 312471), (297, 243033), (489, 147609), (497, 145233), (567, 127303), (639, 112959), (693, 104157), (781, 92421), (891, 81011), (1141, 63261), (1467, 49203), (1491, 48411), (1793, 40257), (1917, 37653), (2079, 34719), (2343, 30807), (3423, 21087), (4401, 16401), (4473, 16137), (5379, 13419), (5467, 13203), (5751, 12551), (6237, 11573), (7029, 10269)]