20005978420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{997307}}^1$

素因数の和:997392

約数の個数: 48

約数和(自身を含む): 45237890880

約数和(自身を除く): 25231912460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 59, 68, 85, 118, 170, 236, 295, 340, 590, 1003, 1180, 2006, 4012, 5015, 10030, 20060, 997307, 1994614, 3989228, 4986535, 9973070, 16954219, 19946140, 33908438, 58841113, 67816876, 84771095, 117682226, 169542190, 235364452, 294205565, 339084380, 588411130, 1000298921, 1176822260, 2000597842, 4001195684, 5001494605, 10002989210, 20005978420]

約数ペア:

[(1, 20005978420), (2, 10002989210), (4, 5001494605), (5, 4001195684), (10, 2000597842), (17, 1176822260), (20, 1000298921), (34, 588411130), (59, 339084380), (68, 294205565), (85, 235364452), (118, 169542190), (170, 117682226), (236, 84771095), (295, 67816876), (340, 58841113), (590, 33908438), (1003, 19946140), (1180, 16954219), (2006, 9973070), (4012, 4986535), (5015, 3989228), (10030, 1994614), (20060, 997307)]