20778360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{347}}^1\times {\mathrm{499}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 62640000

約数和(自身を除く): 41861640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 347, 499, 694, 998, 1041, 1388, 1497, 1735, 1996, 2082, 2495, 2776, 2994, 3470, 3992, 4164, 4990, 5205, 5988, 6940, 7485, 8328, 9980, 10410, 11976, 13880, 14970, 19960, 20820, 29940, 41640, 59880, 173153, 346306, 519459, 692612, 865765, 1038918, 1385224, 1731530, 2077836, 2597295, 3463060, 4155672, 5194590, 6926120, 10389180, 20778360]

約数ペア:

[(1, 20778360), (2, 10389180), (3, 6926120), (4, 5194590), (5, 4155672), (6, 3463060), (8, 2597295), (10, 2077836), (12, 1731530), (15, 1385224), (20, 1038918), (24, 865765), (30, 692612), (40, 519459), (60, 346306), (120, 173153), (347, 59880), (499, 41640), (694, 29940), (998, 20820), (1041, 19960), (1388, 14970), (1497, 13880), (1735, 11976), (1996, 10410), (2082, 9980), (2495, 8328), (2776, 7485), (2994, 6940), (3470, 5988), (3992, 5205), (4164, 4990)]