654420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{839}}^1$

素因数の和:864

約数の個数: 48

約数和(自身を含む): 1975680

約数和(自身を除く): 1321260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 839, 1678, 2517, 3356, 4195, 5034, 8390, 10068, 10907, 12585, 16780, 21814, 25170, 32721, 43628, 50340, 54535, 65442, 109070, 130884, 163605, 218140, 327210, 654420]

約数ペア:

[(1, 654420), (2, 327210), (3, 218140), (4, 163605), (5, 130884), (6, 109070), (10, 65442), (12, 54535), (13, 50340), (15, 43628), (20, 32721), (26, 25170), (30, 21814), (39, 16780), (52, 12585), (60, 10907), (65, 10068), (78, 8390), (130, 5034), (156, 4195), (195, 3356), (260, 2517), (390, 1678), (780, 839)]