20928097645

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{379}}^1\times {\mathrm{773}}^1$

素因数の和:1334

約数の個数: 64

約数和(自身を含む): 31228485120

約数和(自身を除く): 10300387475

約数列:

[1, 5, 7, 13, 35, 65, 91, 157, 379, 455, 773, 785, 1099, 1895, 2041, 2653, 3865, 4927, 5411, 5495, 10049, 10205, 13265, 14287, 24635, 27055, 34489, 50245, 59503, 70343, 71435, 121361, 172445, 292967, 297515, 351715, 416521, 606805, 773539, 849527, 1464835, 1577693, 2050769, 2082605, 3808571, 3867695, 4247635, 5414773, 7888465, 10253845, 11043851, 19042855, 26659997, 27073865, 45995819, 55219255, 133299985, 229979095, 321970733, 597945647, 1609853665, 2989728235, 4185619529, 20928097645]

約数ペア:

[(1, 20928097645), (5, 4185619529), (7, 2989728235), (13, 1609853665), (35, 597945647), (65, 321970733), (91, 229979095), (157, 133299985), (379, 55219255), (455, 45995819), (773, 27073865), (785, 26659997), (1099, 19042855), (1895, 11043851), (2041, 10253845), (2653, 7888465), (3865, 5414773), (4927, 4247635), (5411, 3867695), (5495, 3808571), (10049, 2082605), (10205, 2050769), (13265, 1577693), (14287, 1464835), (24635, 849527), (27055, 773539), (34489, 606805), (50245, 416521), (59503, 351715), (70343, 297515), (71435, 292967), (121361, 172445)]