71890640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:564

約数の個数: 80

約数和(自身を含む): 176774400

約数和(自身を除く): 104883760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 89, 92, 115, 178, 184, 230, 356, 368, 439, 445, 460, 712, 878, 890, 920, 1424, 1756, 1780, 1840, 2047, 2195, 3512, 3560, 4094, 4390, 7024, 7120, 8188, 8780, 10097, 10235, 16376, 17560, 20194, 20470, 32752, 35120, 39071, 40388, 40940, 50485, 78142, 80776, 81880, 100970, 156284, 161552, 163760, 195355, 201940, 312568, 390710, 403880, 625136, 781420, 807760, 898633, 1562840, 1797266, 3125680, 3594532, 4493165, 7189064, 8986330, 14378128, 17972660, 35945320, 71890640]

約数ペア:

[(1, 71890640), (2, 35945320), (4, 17972660), (5, 14378128), (8, 8986330), (10, 7189064), (16, 4493165), (20, 3594532), (23, 3125680), (40, 1797266), (46, 1562840), (80, 898633), (89, 807760), (92, 781420), (115, 625136), (178, 403880), (184, 390710), (230, 312568), (356, 201940), (368, 195355), (439, 163760), (445, 161552), (460, 156284), (712, 100970), (878, 81880), (890, 80776), (920, 78142), (1424, 50485), (1756, 40940), (1780, 40388), (1840, 39071), (2047, 35120), (2195, 32752), (3512, 20470), (3560, 20194), (4094, 17560), (4390, 16376), (7024, 10235), (7120, 10097), (8188, 8780)]