18259240

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:346

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25286360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 89, 92, 115, 178, 184, 223, 230, 356, 445, 446, 460, 712, 890, 892, 920, 1115, 1780, 1784, 2047, 2230, 3560, 4094, 4460, 5129, 8188, 8920, 10235, 10258, 16376, 19847, 20470, 20516, 25645, 39694, 40940, 41032, 51290, 79388, 81880, 99235, 102580, 158776, 198470, 205160, 396940, 456481, 793880, 912962, 1825924, 2282405, 3651848, 4564810, 9129620, 18259240]

約数ペア:

[(1, 18259240), (2, 9129620), (4, 4564810), (5, 3651848), (8, 2282405), (10, 1825924), (20, 912962), (23, 793880), (40, 456481), (46, 396940), (89, 205160), (92, 198470), (115, 158776), (178, 102580), (184, 99235), (223, 81880), (230, 79388), (356, 51290), (445, 41032), (446, 40940), (460, 39694), (712, 25645), (890, 20516), (892, 20470), (920, 19847), (1115, 16376), (1780, 10258), (1784, 10235), (2047, 8920), (2230, 8188), (3560, 5129), (4094, 4460)]