20043765

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 44478720

約数和(自身を除く): 24434955

約数列:

[1, 3, 5, 7, 9, 15, 17, 19, 21, 35, 45, 51, 57, 63, 85, 95, 105, 119, 133, 153, 171, 197, 255, 285, 315, 323, 357, 399, 591, 595, 665, 765, 855, 969, 985, 1071, 1197, 1379, 1615, 1773, 1785, 1995, 2261, 2907, 2955, 3349, 3743, 4137, 4845, 5355, 5985, 6783, 6895, 8865, 10047, 11229, 11305, 12411, 14535, 16745, 18715, 20349, 20685, 23443, 26201, 30141, 33687, 33915, 50235, 56145, 62055, 63631, 70329, 78603, 101745, 117215, 131005, 150705, 168435, 190893, 210987, 235809, 318155, 351645, 393015, 445417, 572679, 954465, 1054935, 1179045, 1336251, 2227085, 2863395, 4008753, 6681255, 20043765]

約数ペア:

[(1, 20043765), (3, 6681255), (5, 4008753), (7, 2863395), (9, 2227085), (15, 1336251), (17, 1179045), (19, 1054935), (21, 954465), (35, 572679), (45, 445417), (51, 393015), (57, 351645), (63, 318155), (85, 235809), (95, 210987), (105, 190893), (119, 168435), (133, 150705), (153, 131005), (171, 117215), (197, 101745), (255, 78603), (285, 70329), (315, 63631), (323, 62055), (357, 56145), (399, 50235), (591, 33915), (595, 33687), (665, 30141), (765, 26201), (855, 23443), (969, 20685), (985, 20349), (1071, 18715), (1197, 16745), (1379, 14535), (1615, 12411), (1773, 11305), (1785, 11229), (1995, 10047), (2261, 8865), (2907, 6895), (2955, 6783), (3349, 5985), (3743, 5355), (4137, 4845)]