647117440

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12799}}^1$

素因数の和:12897

約数の個数: 64

約数和(自身を含む): 1566720000

約数和(自身を除く): 919602560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 632, 640, 790, 1264, 1580, 2528, 3160, 5056, 6320, 10112, 12640, 12799, 25280, 25598, 50560, 51196, 63995, 102392, 127990, 204784, 255980, 409568, 511960, 819136, 1011121, 1023920, 1638272, 2022242, 2047840, 4044484, 4095680, 5055605, 8088968, 8191360, 10111210, 16177936, 20222420, 32355872, 40444840, 64711744, 80889680, 129423488, 161779360, 323558720, 647117440]

約数ペア:

[(1, 647117440), (2, 323558720), (4, 161779360), (5, 129423488), (8, 80889680), (10, 64711744), (16, 40444840), (20, 32355872), (32, 20222420), (40, 16177936), (64, 10111210), (79, 8191360), (80, 8088968), (128, 5055605), (158, 4095680), (160, 4044484), (316, 2047840), (320, 2022242), (395, 1638272), (632, 1023920), (640, 1011121), (790, 819136), (1264, 511960), (1580, 409568), (2528, 255980), (3160, 204784), (5056, 127990), (6320, 102392), (10112, 63995), (12640, 51196), (12799, 50560), (25280, 25598)]