21189948

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3313}}^1$

素因数の和:3374

約数の個数: 48

約数和(自身を含む): 54561696

約数和(自身を除く): 33371748

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 41, 52, 78, 82, 123, 156, 164, 246, 492, 533, 1066, 1599, 2132, 3198, 3313, 6396, 6626, 9939, 13252, 19878, 39756, 43069, 86138, 129207, 135833, 172276, 258414, 271666, 407499, 516828, 543332, 814998, 1629996, 1765829, 3531658, 5297487, 7063316, 10594974, 21189948]

約数ペア:

[(1, 21189948), (2, 10594974), (3, 7063316), (4, 5297487), (6, 3531658), (12, 1765829), (13, 1629996), (26, 814998), (39, 543332), (41, 516828), (52, 407499), (78, 271666), (82, 258414), (123, 172276), (156, 135833), (164, 129207), (246, 86138), (492, 43069), (533, 39756), (1066, 19878), (1599, 13252), (2132, 9939), (3198, 6626), (3313, 6396)]