21294972

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{191}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 57308160

約数和(自身を除く): 36013188

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 163, 171, 191, 228, 326, 342, 382, 489, 573, 652, 684, 764, 978, 1146, 1467, 1719, 1956, 2292, 2934, 3097, 3438, 3629, 5868, 6194, 6876, 7258, 9291, 10887, 12388, 14516, 18582, 21774, 27873, 31133, 32661, 37164, 43548, 55746, 62266, 65322, 93399, 111492, 124532, 130644, 186798, 280197, 373596, 560394, 591527, 1120788, 1183054, 1774581, 2366108, 3549162, 5323743, 7098324, 10647486, 21294972]

約数ペア:

[(1, 21294972), (2, 10647486), (3, 7098324), (4, 5323743), (6, 3549162), (9, 2366108), (12, 1774581), (18, 1183054), (19, 1120788), (36, 591527), (38, 560394), (57, 373596), (76, 280197), (114, 186798), (163, 130644), (171, 124532), (191, 111492), (228, 93399), (326, 65322), (342, 62266), (382, 55746), (489, 43548), (573, 37164), (652, 32661), (684, 31133), (764, 27873), (978, 21774), (1146, 18582), (1467, 14516), (1719, 12388), (1956, 10887), (2292, 9291), (2934, 7258), (3097, 6876), (3438, 6194), (3629, 5868)]