18730940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{619}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 23453860

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 170, 178, 340, 356, 445, 619, 890, 1238, 1513, 1780, 2476, 3026, 3095, 6052, 6190, 7565, 10523, 12380, 15130, 21046, 30260, 42092, 52615, 55091, 105230, 110182, 210460, 220364, 275455, 550910, 936547, 1101820, 1873094, 3746188, 4682735, 9365470, 18730940]

約数ペア:

[(1, 18730940), (2, 9365470), (4, 4682735), (5, 3746188), (10, 1873094), (17, 1101820), (20, 936547), (34, 550910), (68, 275455), (85, 220364), (89, 210460), (170, 110182), (178, 105230), (340, 55091), (356, 52615), (445, 42092), (619, 30260), (890, 21046), (1238, 15130), (1513, 12380), (1780, 10523), (2476, 7565), (3026, 6190), (3095, 6052)]