20490078

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 48932352

約数和(自身を除く): 28442274

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 73, 82, 123, 146, 163, 219, 246, 287, 326, 438, 489, 511, 574, 861, 978, 1022, 1141, 1533, 1722, 2282, 2993, 3066, 3423, 5986, 6683, 6846, 8979, 11899, 13366, 17958, 20049, 20951, 23798, 35697, 40098, 41902, 46781, 62853, 71394, 83293, 93562, 125706, 140343, 166586, 249879, 280686, 487859, 499758, 975718, 1463577, 2927154, 3415013, 6830026, 10245039, 20490078]

約数ペア:

[(1, 20490078), (2, 10245039), (3, 6830026), (6, 3415013), (7, 2927154), (14, 1463577), (21, 975718), (41, 499758), (42, 487859), (73, 280686), (82, 249879), (123, 166586), (146, 140343), (163, 125706), (219, 93562), (246, 83293), (287, 71394), (326, 62853), (438, 46781), (489, 41902), (511, 40098), (574, 35697), (861, 23798), (978, 20951), (1022, 20049), (1141, 17958), (1533, 13366), (1722, 11899), (2282, 8979), (2993, 6846), (3066, 6683), (3423, 5986)]