21333884

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 46730880

約数和(自身を除く): 25396996

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 143, 151, 169, 209, 247, 286, 302, 338, 418, 494, 572, 604, 676, 836, 988, 1661, 1859, 1963, 2717, 2869, 3211, 3322, 3718, 3926, 5434, 5738, 6422, 6644, 7436, 7852, 10868, 11476, 12844, 21593, 25519, 31559, 35321, 37297, 43186, 51038, 63118, 70642, 74594, 86372, 102076, 126236, 141284, 149188, 280709, 410267, 484861, 561418, 820534, 969722, 1122836, 1641068, 1939444, 5333471, 10666942, 21333884]

約数ペア:

[(1, 21333884), (2, 10666942), (4, 5333471), (11, 1939444), (13, 1641068), (19, 1122836), (22, 969722), (26, 820534), (38, 561418), (44, 484861), (52, 410267), (76, 280709), (143, 149188), (151, 141284), (169, 126236), (209, 102076), (247, 86372), (286, 74594), (302, 70642), (338, 63118), (418, 51038), (494, 43186), (572, 37297), (604, 35321), (676, 31559), (836, 25519), (988, 21593), (1661, 12844), (1859, 11476), (1963, 10868), (2717, 7852), (2869, 7436), (3211, 6644), (3322, 6422), (3718, 5738), (3926, 5434)]