21840990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16931}}^1$

素因数の和:16984

約数の個数: 32

約数和(自身を含む): 53640576

約数和(自身を除く): 31799586

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 16931, 33862, 50793, 84655, 101586, 169310, 253965, 507930, 728033, 1456066, 2184099, 3640165, 4368198, 7280330, 10920495, 21840990]

約数ペア:

[(1, 21840990), (2, 10920495), (3, 7280330), (5, 4368198), (6, 3640165), (10, 2184099), (15, 1456066), (30, 728033), (43, 507930), (86, 253965), (129, 169310), (215, 101586), (258, 84655), (430, 50793), (645, 33862), (1290, 16931)]