161493760

素因数分解:

$2^8\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1777}}^1$

素因数の和:1869

約数の個数: 72

約数和(自身を含む): 392497056

約数和(自身を除く): 231003296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 320, 355, 568, 640, 710, 1136, 1280, 1420, 1777, 2272, 2840, 3554, 4544, 5680, 7108, 8885, 9088, 11360, 14216, 17770, 18176, 22720, 28432, 35540, 45440, 56864, 71080, 90880, 113728, 126167, 142160, 227456, 252334, 284320, 454912, 504668, 568640, 630835, 1009336, 1137280, 1261670, 2018672, 2274560, 2523340, 4037344, 5046680, 8074688, 10093360, 16149376, 20186720, 32298752, 40373440, 80746880, 161493760]

約数ペア:

[(1, 161493760), (2, 80746880), (4, 40373440), (5, 32298752), (8, 20186720), (10, 16149376), (16, 10093360), (20, 8074688), (32, 5046680), (40, 4037344), (64, 2523340), (71, 2274560), (80, 2018672), (128, 1261670), (142, 1137280), (160, 1009336), (256, 630835), (284, 568640), (320, 504668), (355, 454912), (568, 284320), (640, 252334), (710, 227456), (1136, 142160), (1280, 126167), (1420, 113728), (1777, 90880), (2272, 71080), (2840, 56864), (3554, 45440), (4544, 35540), (5680, 28432), (7108, 22720), (8885, 18176), (9088, 17770), (11360, 14216)]