21845278

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1319}}^1$

素因数の和:1361

約数の個数: 36

約数和(自身を含む): 41306760

約数和(自身を除く): 19461482

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 169, 182, 338, 637, 1183, 1274, 1319, 2366, 2638, 8281, 9233, 16562, 17147, 18466, 34294, 64631, 120029, 129262, 222911, 240058, 445822, 840203, 1560377, 1680406, 3120754, 10922639, 21845278]

約数ペア:

[(1, 21845278), (2, 10922639), (7, 3120754), (13, 1680406), (14, 1560377), (26, 840203), (49, 445822), (91, 240058), (98, 222911), (169, 129262), (182, 120029), (338, 64631), (637, 34294), (1183, 18466), (1274, 17147), (1319, 16562), (2366, 9233), (2638, 8281)]