644709670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 1287705600

約数和(自身を除く): 642995930

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 137, 179, 239, 274, 358, 478, 685, 895, 1195, 1370, 1507, 1790, 1969, 2390, 2629, 3014, 3938, 5258, 7535, 9845, 13145, 15070, 19690, 24523, 26290, 32743, 42781, 49046, 65486, 85562, 122615, 163715, 213905, 245230, 269753, 327430, 360173, 427810, 470591, 539506, 720346, 941182, 1348765, 1800865, 2352955, 2697530, 3601730, 4705910, 5860997, 11721994, 29304985, 58609970, 64470967, 128941934, 322354835, 644709670]

約数ペア:

[(1, 644709670), (2, 322354835), (5, 128941934), (10, 64470967), (11, 58609970), (22, 29304985), (55, 11721994), (110, 5860997), (137, 4705910), (179, 3601730), (239, 2697530), (274, 2352955), (358, 1800865), (478, 1348765), (685, 941182), (895, 720346), (1195, 539506), (1370, 470591), (1507, 427810), (1790, 360173), (1969, 327430), (2390, 269753), (2629, 245230), (3014, 213905), (3938, 163715), (5258, 122615), (7535, 85562), (9845, 65486), (13145, 49046), (15070, 42781), (19690, 32743), (24523, 26290)]