18568960

素因数分解:

$2^8\times 5^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 45254160

約数和(自身を除く): 26685200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 163, 178, 256, 320, 326, 356, 445, 640, 652, 712, 815, 890, 1280, 1304, 1424, 1630, 1780, 2608, 2848, 3260, 3560, 5216, 5696, 6520, 7120, 10432, 11392, 13040, 14240, 14507, 20864, 22784, 26080, 28480, 29014, 41728, 52160, 56960, 58028, 72535, 104320, 113920, 116056, 145070, 208640, 232112, 290140, 464224, 580280, 928448, 1160560, 1856896, 2321120, 3713792, 4642240, 9284480, 18568960]

約数ペア:

[(1, 18568960), (2, 9284480), (4, 4642240), (5, 3713792), (8, 2321120), (10, 1856896), (16, 1160560), (20, 928448), (32, 580280), (40, 464224), (64, 290140), (80, 232112), (89, 208640), (128, 145070), (160, 116056), (163, 113920), (178, 104320), (256, 72535), (320, 58028), (326, 56960), (356, 52160), (445, 41728), (640, 29014), (652, 28480), (712, 26080), (815, 22784), (890, 20864), (1280, 14507), (1304, 14240), (1424, 13040), (1630, 11392), (1780, 10432), (2608, 7120), (2848, 6520), (3260, 5696), (3560, 5216)]