20950245

素因数分解:

$3^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 38630592

約数和(自身を除く): 17680347

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 81, 129, 135, 215, 243, 387, 401, 405, 645, 1161, 1203, 1215, 1935, 2005, 3483, 3609, 5805, 6015, 10449, 10827, 17243, 17415, 18045, 32481, 51729, 52245, 54135, 86215, 97443, 155187, 162405, 258645, 465561, 487215, 775935, 1396683, 2327805, 4190049, 6983415, 20950245]

約数ペア:

[(1, 20950245), (3, 6983415), (5, 4190049), (9, 2327805), (15, 1396683), (27, 775935), (43, 487215), (45, 465561), (81, 258645), (129, 162405), (135, 155187), (215, 97443), (243, 86215), (387, 54135), (401, 52245), (405, 51729), (645, 32481), (1161, 18045), (1203, 17415), (1215, 17243), (1935, 10827), (2005, 10449), (3483, 6015), (3609, 5805)]