20280650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:827

約数の個数: 48

約数和(自身を含む): 41669208

約数和(自身を除く): 21388558

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 130, 205, 325, 410, 533, 650, 761, 1025, 1066, 1522, 2050, 2665, 3805, 5330, 7610, 9893, 13325, 19025, 19786, 26650, 31201, 38050, 49465, 62402, 98930, 156005, 247325, 312010, 405613, 494650, 780025, 811226, 1560050, 2028065, 4056130, 10140325, 20280650]

約数ペア:

[(1, 20280650), (2, 10140325), (5, 4056130), (10, 2028065), (13, 1560050), (25, 811226), (26, 780025), (41, 494650), (50, 405613), (65, 312010), (82, 247325), (130, 156005), (205, 98930), (325, 62402), (410, 49465), (533, 38050), (650, 31201), (761, 26650), (1025, 19786), (1066, 19025), (1522, 13325), (2050, 9893), (2665, 7610), (3805, 5330)]