20121388275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1\times {\mathrm{977}}^1$

素因数の和:1593

約数の個数: 96

約数和(自身を含む): 36541679040

約数和(自身を除く): 16420290765

約数列:

[1, 3, 5, 15, 17, 25, 29, 51, 75, 85, 87, 145, 255, 425, 435, 493, 557, 725, 977, 1275, 1479, 1671, 2175, 2465, 2785, 2931, 4885, 7395, 8355, 9469, 12325, 13925, 14655, 16153, 16609, 24425, 28333, 28407, 36975, 41775, 47345, 48459, 49827, 73275, 80765, 83045, 84999, 141665, 142035, 236725, 242295, 249135, 274601, 403825, 415225, 424995, 481661, 544189, 708325, 710175, 823803, 1211475, 1245675, 1373005, 1444983, 1632567, 2124975, 2408305, 2720945, 4119015, 6865025, 7224915, 8162835, 9251213, 12041525, 13604725, 15781481, 20595075, 27753639, 36124575, 40814175, 46256065, 47344443, 78907405, 138768195, 231280325, 236722215, 268285177, 394537025, 693840975, 804855531, 1183611075, 1341425885, 4024277655, 6707129425, 20121388275]

約数ペア:

[(1, 20121388275), (3, 6707129425), (5, 4024277655), (15, 1341425885), (17, 1183611075), (25, 804855531), (29, 693840975), (51, 394537025), (75, 268285177), (85, 236722215), (87, 231280325), (145, 138768195), (255, 78907405), (425, 47344443), (435, 46256065), (493, 40814175), (557, 36124575), (725, 27753639), (977, 20595075), (1275, 15781481), (1479, 13604725), (1671, 12041525), (2175, 9251213), (2465, 8162835), (2785, 7224915), (2931, 6865025), (4885, 4119015), (7395, 2720945), (8355, 2408305), (9469, 2124975), (12325, 1632567), (13925, 1444983), (14655, 1373005), (16153, 1245675), (16609, 1211475), (24425, 823803), (28333, 710175), (28407, 708325), (36975, 544189), (41775, 481661), (47345, 424995), (48459, 415225), (49827, 403825), (73275, 274601), (80765, 249135), (83045, 242295), (84999, 236725), (141665, 142035)]