21234514925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:423

約数の個数: 96

約数和(自身を含む): 29765594880

約数和(自身を除く): 8531079955

約数列:

[1, 5, 13, 25, 53, 65, 71, 97, 179, 265, 325, 355, 485, 689, 895, 923, 1261, 1325, 1775, 2327, 2425, 3445, 3763, 4475, 4615, 5141, 6305, 6887, 9487, 11635, 12709, 17225, 17363, 18815, 23075, 25705, 31525, 34435, 47435, 48919, 58175, 63545, 66833, 86815, 89531, 94075, 123331, 128525, 165217, 172175, 225719, 237175, 244595, 317725, 334165, 365011, 434075, 447655, 616655, 673577, 826085, 920239, 1128595, 1222975, 1232773, 1670825, 1825055, 2238275, 3083275, 3367885, 4130425, 4601195, 4745143, 5642975, 6163865, 8756501, 9125275, 11963107, 16026049, 16839425, 23005975, 23725715, 30819325, 43782505, 59815535, 65336969, 80130245, 118628575, 218912525, 299077675, 326684845, 400651225, 849380597, 1633424225, 4246902985, 21234514925]

約数ペア:

[(1, 21234514925), (5, 4246902985), (13, 1633424225), (25, 849380597), (53, 400651225), (65, 326684845), (71, 299077675), (97, 218912525), (179, 118628575), (265, 80130245), (325, 65336969), (355, 59815535), (485, 43782505), (689, 30819325), (895, 23725715), (923, 23005975), (1261, 16839425), (1325, 16026049), (1775, 11963107), (2327, 9125275), (2425, 8756501), (3445, 6163865), (3763, 5642975), (4475, 4745143), (4615, 4601195), (5141, 4130425), (6305, 3367885), (6887, 3083275), (9487, 2238275), (11635, 1825055), (12709, 1670825), (17225, 1232773), (17363, 1222975), (18815, 1128595), (23075, 920239), (25705, 826085), (31525, 673577), (34435, 616655), (47435, 447655), (48919, 434075), (58175, 365011), (63545, 334165), (66833, 317725), (86815, 244595), (89531, 237175), (94075, 225719), (123331, 172175), (128525, 165217)]