21556559725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:623

約数の個数: 96

約数和(自身を含む): 30638217600

約数和(自身を除く): 9081657875

約数列:

[1, 5, 17, 19, 25, 61, 85, 95, 107, 305, 323, 409, 425, 475, 535, 1037, 1159, 1525, 1615, 1819, 2033, 2045, 2675, 5185, 5795, 6527, 6953, 7771, 8075, 9095, 10165, 10225, 19703, 24949, 25925, 28975, 32635, 34561, 34765, 38855, 43763, 45475, 50825, 98515, 110959, 124013, 124745, 132107, 163175, 172805, 173825, 194275, 218815, 424133, 474031, 492575, 554795, 620065, 623725, 660535, 743971, 831497, 864025, 1094075, 2108221, 2120665, 2370155, 2669543, 2773975, 3100325, 3302675, 3719855, 4157485, 8058527, 10541105, 10603325, 11850775, 13347715, 14135449, 18599275, 20787425, 40292635, 45382231, 50721317, 52705525, 66738575, 70677245, 201463175, 226911155, 253606585, 353386225, 862262389, 1134555775, 1268032925, 4311311945, 21556559725]

約数ペア:

[(1, 21556559725), (5, 4311311945), (17, 1268032925), (19, 1134555775), (25, 862262389), (61, 353386225), (85, 253606585), (95, 226911155), (107, 201463175), (305, 70677245), (323, 66738575), (409, 52705525), (425, 50721317), (475, 45382231), (535, 40292635), (1037, 20787425), (1159, 18599275), (1525, 14135449), (1615, 13347715), (1819, 11850775), (2033, 10603325), (2045, 10541105), (2675, 8058527), (5185, 4157485), (5795, 3719855), (6527, 3302675), (6953, 3100325), (7771, 2773975), (8075, 2669543), (9095, 2370155), (10165, 2120665), (10225, 2108221), (19703, 1094075), (24949, 864025), (25925, 831497), (28975, 743971), (32635, 660535), (34561, 623725), (34765, 620065), (38855, 554795), (43763, 492575), (45475, 474031), (50825, 424133), (98515, 218815), (110959, 194275), (124013, 173825), (124745, 172805), (132107, 163175)]