21311108

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{461}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 46362624

約数和(自身を除く): 25051516

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 127, 182, 254, 364, 461, 508, 889, 922, 1651, 1778, 1844, 3227, 3302, 3556, 5993, 6454, 6604, 11557, 11986, 12908, 23114, 23972, 41951, 46228, 58547, 83902, 117094, 167804, 234188, 409829, 761111, 819658, 1522222, 1639316, 3044444, 5327777, 10655554, 21311108]

約数ペア:

[(1, 21311108), (2, 10655554), (4, 5327777), (7, 3044444), (13, 1639316), (14, 1522222), (26, 819658), (28, 761111), (52, 409829), (91, 234188), (127, 167804), (182, 117094), (254, 83902), (364, 58547), (461, 46228), (508, 41951), (889, 23972), (922, 23114), (1651, 12908), (1778, 11986), (1844, 11557), (3227, 6604), (3302, 6454), (3556, 5993)]