638008960

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:618

約数の個数: 128

約数和(自身を含む): 1612742400

約数和(自身を除く): 974733440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 89, 92, 115, 128, 160, 178, 184, 230, 320, 356, 368, 445, 460, 487, 640, 712, 736, 890, 920, 974, 1424, 1472, 1780, 1840, 1948, 2047, 2435, 2848, 2944, 3560, 3680, 3896, 4094, 4870, 5696, 7120, 7360, 7792, 8188, 9740, 10235, 11201, 11392, 14240, 14720, 15584, 16376, 19480, 20470, 22402, 28480, 31168, 32752, 38960, 40940, 43343, 44804, 56005, 56960, 62336, 65504, 77920, 81880, 86686, 89608, 112010, 131008, 155840, 163760, 173372, 179216, 216715, 224020, 262016, 311680, 327520, 346744, 358432, 433430, 448040, 655040, 693488, 716864, 866860, 896080, 996889, 1310080, 1386976, 1433728, 1733720, 1792160, 1993778, 2773952, 3467440, 3584320, 3987556, 4984445, 5547904, 6934880, 7168640, 7975112, 9968890, 13869760, 15950224, 19937780, 27739520, 31900448, 39875560, 63800896, 79751120, 127601792, 159502240, 319004480, 638008960]

約数ペア:

[(1, 638008960), (2, 319004480), (4, 159502240), (5, 127601792), (8, 79751120), (10, 63800896), (16, 39875560), (20, 31900448), (23, 27739520), (32, 19937780), (40, 15950224), (46, 13869760), (64, 9968890), (80, 7975112), (89, 7168640), (92, 6934880), (115, 5547904), (128, 4984445), (160, 3987556), (178, 3584320), (184, 3467440), (230, 2773952), (320, 1993778), (356, 1792160), (368, 1733720), (445, 1433728), (460, 1386976), (487, 1310080), (640, 996889), (712, 896080), (736, 866860), (890, 716864), (920, 693488), (974, 655040), (1424, 448040), (1472, 433430), (1780, 358432), (1840, 346744), (1948, 327520), (2047, 311680), (2435, 262016), (2848, 224020), (2944, 216715), (3560, 179216), (3680, 173372), (3896, 163760), (4094, 155840), (4870, 131008), (5696, 112010), (7120, 89608), (7360, 86686), (7792, 81880), (8188, 77920), (9740, 65504), (10235, 62336), (11201, 56960), (11392, 56005), (14240, 44804), (14720, 43343), (15584, 40940), (16376, 38960), (19480, 32752), (20470, 31168), (22402, 28480)]