243440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 602640

約数和(自身を除く): 359200

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 179, 272, 340, 358, 680, 716, 895, 1360, 1432, 1790, 2864, 3043, 3580, 6086, 7160, 12172, 14320, 15215, 24344, 30430, 48688, 60860, 121720, 243440]

約数ペア:

[(1, 243440), (2, 121720), (4, 60860), (5, 48688), (8, 30430), (10, 24344), (16, 15215), (17, 14320), (20, 12172), (34, 7160), (40, 6086), (68, 3580), (80, 3043), (85, 2864), (136, 1790), (170, 1432), (179, 1360), (272, 895), (340, 716), (358, 680)]