81663440

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{587}}^1$

素因数の和:684

約数の個数: 80

約数和(自身を含む): 199487232

約数和(自身を除く): 117823792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 47, 74, 80, 94, 148, 185, 188, 235, 296, 370, 376, 470, 587, 592, 740, 752, 940, 1174, 1480, 1739, 1880, 2348, 2935, 2960, 3478, 3760, 4696, 5870, 6956, 8695, 9392, 11740, 13912, 17390, 21719, 23480, 27589, 27824, 34780, 43438, 46960, 55178, 69560, 86876, 108595, 110356, 137945, 139120, 173752, 217190, 220712, 275890, 347504, 434380, 441424, 551780, 868760, 1020793, 1103560, 1737520, 2041586, 2207120, 4083172, 5103965, 8166344, 10207930, 16332688, 20415860, 40831720, 81663440]

約数ペア:

[(1, 81663440), (2, 40831720), (4, 20415860), (5, 16332688), (8, 10207930), (10, 8166344), (16, 5103965), (20, 4083172), (37, 2207120), (40, 2041586), (47, 1737520), (74, 1103560), (80, 1020793), (94, 868760), (148, 551780), (185, 441424), (188, 434380), (235, 347504), (296, 275890), (370, 220712), (376, 217190), (470, 173752), (587, 139120), (592, 137945), (740, 110356), (752, 108595), (940, 86876), (1174, 69560), (1480, 55178), (1739, 46960), (1880, 43438), (2348, 34780), (2935, 27824), (2960, 27589), (3478, 23480), (3760, 21719), (4696, 17390), (5870, 13912), (6956, 11740), (8695, 9392)]