31669760

素因数分解:

$2^9\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 77338800

約数和(自身を除く): 45669040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 139, 160, 178, 256, 278, 320, 356, 445, 512, 556, 640, 695, 712, 890, 1112, 1280, 1390, 1424, 1780, 2224, 2560, 2780, 2848, 3560, 4448, 5560, 5696, 7120, 8896, 11120, 11392, 12371, 14240, 17792, 22240, 22784, 24742, 28480, 35584, 44480, 45568, 49484, 56960, 61855, 71168, 88960, 98968, 113920, 123710, 177920, 197936, 227840, 247420, 355840, 395872, 494840, 791744, 989680, 1583488, 1979360, 3166976, 3958720, 6333952, 7917440, 15834880, 31669760]

約数ペア:

[(1, 31669760), (2, 15834880), (4, 7917440), (5, 6333952), (8, 3958720), (10, 3166976), (16, 1979360), (20, 1583488), (32, 989680), (40, 791744), (64, 494840), (80, 395872), (89, 355840), (128, 247420), (139, 227840), (160, 197936), (178, 177920), (256, 123710), (278, 113920), (320, 98968), (356, 88960), (445, 71168), (512, 61855), (556, 56960), (640, 49484), (695, 45568), (712, 44480), (890, 35584), (1112, 28480), (1280, 24742), (1390, 22784), (1424, 22240), (1780, 17792), (2224, 14240), (2560, 12371), (2780, 11392), (2848, 11120), (3560, 8896), (4448, 7120), (5560, 5696)]