21492268

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24472532

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 71, 76, 133, 142, 266, 284, 497, 532, 569, 994, 1138, 1349, 1988, 2276, 2698, 3983, 5396, 7966, 9443, 10811, 15932, 18886, 21622, 37772, 40399, 43244, 75677, 80798, 151354, 161596, 282793, 302708, 565586, 767581, 1131172, 1535162, 3070324, 5373067, 10746134, 21492268]

約数ペア:

[(1, 21492268), (2, 10746134), (4, 5373067), (7, 3070324), (14, 1535162), (19, 1131172), (28, 767581), (38, 565586), (71, 302708), (76, 282793), (133, 161596), (142, 151354), (266, 80798), (284, 75677), (497, 43244), (532, 40399), (569, 37772), (994, 21622), (1138, 18886), (1349, 15932), (1988, 10811), (2276, 9443), (2698, 7966), (3983, 5396)]