20720028

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 58347520

約数和(自身を除く): 37627492

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 62, 73, 84, 93, 109, 124, 146, 186, 217, 218, 219, 292, 327, 372, 434, 436, 438, 511, 651, 654, 763, 868, 876, 1022, 1302, 1308, 1526, 1533, 2044, 2263, 2289, 2604, 3052, 3066, 3379, 4526, 4578, 6132, 6758, 6789, 7957, 9052, 9156, 10137, 13516, 13578, 15841, 15914, 20274, 23653, 23871, 27156, 31682, 31828, 40548, 47306, 47523, 47742, 55699, 63364, 70959, 94612, 95046, 95484, 111398, 141918, 167097, 190092, 222796, 246667, 283836, 334194, 493334, 668388, 740001, 986668, 1480002, 1726669, 2960004, 3453338, 5180007, 6906676, 10360014, 20720028]

約数ペア:

[(1, 20720028), (2, 10360014), (3, 6906676), (4, 5180007), (6, 3453338), (7, 2960004), (12, 1726669), (14, 1480002), (21, 986668), (28, 740001), (31, 668388), (42, 493334), (62, 334194), (73, 283836), (84, 246667), (93, 222796), (109, 190092), (124, 167097), (146, 141918), (186, 111398), (217, 95484), (218, 95046), (219, 94612), (292, 70959), (327, 63364), (372, 55699), (434, 47742), (436, 47523), (438, 47306), (511, 40548), (651, 31828), (654, 31682), (763, 27156), (868, 23871), (876, 23653), (1022, 20274), (1302, 15914), (1308, 15841), (1526, 13578), (1533, 13516), (2044, 10137), (2263, 9156), (2289, 9052), (2604, 7957), (3052, 6789), (3066, 6758), (3379, 6132), (4526, 4578)]