81657876680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1949}}^1\times {\mathrm{28309}}^1$

素因数の和:30306

約数の個数: 64

約数和(自身を含む): 188799390000

約数和(自身を除く): 107141513320

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 1949, 3898, 7796, 9745, 15592, 19490, 28309, 38980, 56618, 72113, 77960, 113236, 141545, 144226, 226472, 283090, 288452, 360565, 566180, 576904, 721130, 1047433, 1132360, 1442260, 2094866, 2884520, 4189732, 5237165, 8379464, 10474330, 20948660, 41897320, 55174241, 110348482, 220696964, 275871205, 441393928, 551742410, 1103484820, 2041446917, 2206969640, 4082893834, 8165787668, 10207234585, 16331575336, 20414469170, 40828938340, 81657876680]

約数ペア:

[(1, 81657876680), (2, 40828938340), (4, 20414469170), (5, 16331575336), (8, 10207234585), (10, 8165787668), (20, 4082893834), (37, 2206969640), (40, 2041446917), (74, 1103484820), (148, 551742410), (185, 441393928), (296, 275871205), (370, 220696964), (740, 110348482), (1480, 55174241), (1949, 41897320), (3898, 20948660), (7796, 10474330), (9745, 8379464), (15592, 5237165), (19490, 4189732), (28309, 2884520), (38980, 2094866), (56618, 1442260), (72113, 1132360), (77960, 1047433), (113236, 721130), (141545, 576904), (144226, 566180), (226472, 360565), (283090, 288452)]