987389140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{4049}}^1$

素因数の和:4284

約数の個数: 48

約数和(自身を含む): 2112642000

約数和(自身を除く): 1125252860

約数列:

[1, 2, 4, 5, 10, 20, 89, 137, 178, 274, 356, 445, 548, 685, 890, 1370, 1780, 2740, 4049, 8098, 12193, 16196, 20245, 24386, 40490, 48772, 60965, 80980, 121930, 243860, 360361, 554713, 720722, 1109426, 1441444, 1801805, 2218852, 2773565, 3603610, 5547130, 7207220, 11094260, 49369457, 98738914, 197477828, 246847285, 493694570, 987389140]

約数ペア:

[(1, 987389140), (2, 493694570), (4, 246847285), (5, 197477828), (10, 98738914), (20, 49369457), (89, 11094260), (137, 7207220), (178, 5547130), (274, 3603610), (356, 2773565), (445, 2218852), (548, 1801805), (685, 1441444), (890, 1109426), (1370, 720722), (1780, 554713), (2740, 360361), (4049, 243860), (8098, 121930), (12193, 80980), (16196, 60965), (20245, 48772), (24386, 40490)]