31726720

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{557}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 76836600

約数和(自身を除く): 45109880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 320, 356, 445, 557, 640, 712, 890, 1114, 1424, 1780, 2228, 2785, 2848, 3560, 4456, 5570, 5696, 7120, 8912, 11140, 11392, 14240, 17824, 22280, 28480, 35648, 44560, 49573, 56960, 71296, 89120, 99146, 178240, 198292, 247865, 356480, 396584, 495730, 793168, 991460, 1586336, 1982920, 3172672, 3965840, 6345344, 7931680, 15863360, 31726720]

約数ペア:

[(1, 31726720), (2, 15863360), (4, 7931680), (5, 6345344), (8, 3965840), (10, 3172672), (16, 1982920), (20, 1586336), (32, 991460), (40, 793168), (64, 495730), (80, 396584), (89, 356480), (128, 247865), (160, 198292), (178, 178240), (320, 99146), (356, 89120), (445, 71296), (557, 56960), (640, 49573), (712, 44560), (890, 35648), (1114, 28480), (1424, 22280), (1780, 17824), (2228, 14240), (2785, 11392), (2848, 11140), (3560, 8912), (4456, 7120), (5570, 5696)]