8900890

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:306

約数の個数: 32

約数和(自身を含む): 16543440

約数和(自身を除く): 7642550

約数列:

[1, 2, 5, 10, 73, 89, 137, 146, 178, 274, 365, 445, 685, 730, 890, 1370, 6497, 10001, 12193, 12994, 20002, 24386, 32485, 50005, 60965, 64970, 100010, 121930, 890089, 1780178, 4450445, 8900890]

約数ペア:

[(1, 8900890), (2, 4450445), (5, 1780178), (10, 890089), (73, 121930), (89, 100010), (137, 64970), (146, 60965), (178, 50005), (274, 32485), (365, 24386), (445, 20002), (685, 12994), (730, 12193), (890, 10001), (1370, 6497)]