21402390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 53830656

約数和(自身を除く): 32428266

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 47, 86, 94, 129, 141, 215, 235, 258, 282, 353, 430, 470, 645, 705, 706, 1059, 1290, 1410, 1765, 2021, 2118, 3530, 4042, 5295, 6063, 10105, 10590, 12126, 15179, 16591, 20210, 30315, 30358, 33182, 45537, 49773, 60630, 75895, 82955, 91074, 99546, 151790, 165910, 227685, 248865, 455370, 497730, 713413, 1426826, 2140239, 3567065, 4280478, 7134130, 10701195, 21402390]

約数ペア:

[(1, 21402390), (2, 10701195), (3, 7134130), (5, 4280478), (6, 3567065), (10, 2140239), (15, 1426826), (30, 713413), (43, 497730), (47, 455370), (86, 248865), (94, 227685), (129, 165910), (141, 151790), (215, 99546), (235, 91074), (258, 82955), (282, 75895), (353, 60630), (430, 49773), (470, 45537), (645, 33182), (705, 30358), (706, 30315), (1059, 20210), (1290, 16591), (1410, 15179), (1765, 12126), (2021, 10590), (2118, 10105), (3530, 6063), (4042, 5295)]