990147250

素因数分解:

$2^1\times 5^3\times {\mathrm{89}}^1\times {\mathrm{44501}}^1$

素因数の和:44607

約数の個数: 32

約数和(自身を含む): 1874424240

約数和(自身を除く): 884276990

約数列:

[1, 2, 5, 10, 25, 50, 89, 125, 178, 250, 445, 890, 2225, 4450, 11125, 22250, 44501, 89002, 222505, 445010, 1112525, 2225050, 3960589, 5562625, 7921178, 11125250, 19802945, 39605890, 99014725, 198029450, 495073625, 990147250]

約数ペア:

[(1, 990147250), (2, 495073625), (5, 198029450), (10, 99014725), (25, 39605890), (50, 19802945), (89, 11125250), (125, 7921178), (178, 5562625), (250, 3960589), (445, 2225050), (890, 1112525), (2225, 445010), (4450, 222505), (11125, 89002), (22250, 44501)]