1288894480

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{1871}}^1$

素因数の和:2072

約数の個数: 80

約数和(自身を含む): 3064089600

約数和(自身を除く): 1775195120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 109, 158, 218, 316, 395, 436, 545, 632, 790, 872, 1090, 1264, 1580, 1744, 1871, 2180, 3160, 3742, 4360, 6320, 7484, 8611, 8720, 9355, 14968, 17222, 18710, 29936, 34444, 37420, 43055, 68888, 74840, 86110, 137776, 147809, 149680, 172220, 203939, 295618, 344440, 407878, 591236, 688880, 739045, 815756, 1019695, 1182472, 1478090, 1631512, 2039390, 2364944, 2956180, 3263024, 4078780, 5912360, 8157560, 11824720, 16111181, 16315120, 32222362, 64444724, 80555905, 128889448, 161111810, 257778896, 322223620, 644447240, 1288894480]

約数ペア:

[(1, 1288894480), (2, 644447240), (4, 322223620), (5, 257778896), (8, 161111810), (10, 128889448), (16, 80555905), (20, 64444724), (40, 32222362), (79, 16315120), (80, 16111181), (109, 11824720), (158, 8157560), (218, 5912360), (316, 4078780), (395, 3263024), (436, 2956180), (545, 2364944), (632, 2039390), (790, 1631512), (872, 1478090), (1090, 1182472), (1264, 1019695), (1580, 815756), (1744, 739045), (1871, 688880), (2180, 591236), (3160, 407878), (3742, 344440), (4360, 295618), (6320, 203939), (7484, 172220), (8611, 149680), (8720, 147809), (9355, 137776), (14968, 86110), (17222, 74840), (18710, 68888), (29936, 43055), (34444, 37420)]