1778140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1006

約数の個数: 48

約数和(自身を含む): 4600512

約数和(自身を除く): 2822372

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 977, 1820, 1954, 3908, 4885, 6839, 9770, 12701, 13678, 19540, 25402, 27356, 34195, 50804, 63505, 68390, 88907, 127010, 136780, 177814, 254020, 355628, 444535, 889070, 1778140]

約数ペア:

[(1, 1778140), (2, 889070), (4, 444535), (5, 355628), (7, 254020), (10, 177814), (13, 136780), (14, 127010), (20, 88907), (26, 68390), (28, 63505), (35, 50804), (52, 34195), (65, 27356), (70, 25402), (91, 19540), (130, 13678), (140, 12701), (182, 9770), (260, 6839), (364, 4885), (455, 3908), (910, 1954), (977, 1820)]