31278620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{701}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 69346368

約数和(自身を除く): 38067748

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 97, 115, 194, 230, 388, 460, 485, 701, 970, 1402, 1940, 2231, 2804, 3505, 4462, 7010, 8924, 11155, 14020, 16123, 22310, 32246, 44620, 64492, 67997, 80615, 135994, 161230, 271988, 322460, 339985, 679970, 1359940, 1563931, 3127862, 6255724, 7819655, 15639310, 31278620]

約数ペア:

[(1, 31278620), (2, 15639310), (4, 7819655), (5, 6255724), (10, 3127862), (20, 1563931), (23, 1359940), (46, 679970), (92, 339985), (97, 322460), (115, 271988), (194, 161230), (230, 135994), (388, 80615), (460, 67997), (485, 64492), (701, 44620), (970, 32246), (1402, 22310), (1940, 16123), (2231, 14020), (2804, 11155), (3505, 8924), (4462, 7010)]