494887720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{1259}}^1$

素因数の和:1618

約数の個数: 64

約数和(自身を含む): 1153958400

約数和(自身を除く): 659070680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 317, 620, 634, 1240, 1259, 1268, 1585, 2518, 2536, 3170, 5036, 6295, 6340, 9827, 10072, 12590, 12680, 19654, 25180, 39029, 39308, 49135, 50360, 78058, 78616, 98270, 156116, 195145, 196540, 312232, 390290, 393080, 399103, 780580, 798206, 1561160, 1596412, 1995515, 3192824, 3991030, 7982060, 12372193, 15964120, 24744386, 49488772, 61860965, 98977544, 123721930, 247443860, 494887720]

約数ペア:

[(1, 494887720), (2, 247443860), (4, 123721930), (5, 98977544), (8, 61860965), (10, 49488772), (20, 24744386), (31, 15964120), (40, 12372193), (62, 7982060), (124, 3991030), (155, 3192824), (248, 1995515), (310, 1596412), (317, 1561160), (620, 798206), (634, 780580), (1240, 399103), (1259, 393080), (1268, 390290), (1585, 312232), (2518, 196540), (2536, 195145), (3170, 156116), (5036, 98270), (6295, 78616), (6340, 78058), (9827, 50360), (10072, 49135), (12590, 39308), (12680, 39029), (19654, 25180)]