530440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 1215000

約数和(自身を除く): 684560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 149, 178, 298, 356, 445, 596, 712, 745, 890, 1192, 1490, 1780, 2980, 3560, 5960, 13261, 26522, 53044, 66305, 106088, 132610, 265220, 530440]

約数ペア:

[(1, 530440), (2, 265220), (4, 132610), (5, 106088), (8, 66305), (10, 53044), (20, 26522), (40, 13261), (89, 5960), (149, 3560), (178, 2980), (298, 1780), (356, 1490), (445, 1192), (596, 890), (712, 745)]