20390932040

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{353}}^1$

素因数の和:711

約数の個数: 128

約数和(自身を含む): 47273103360

約数和(自身を除く): 26882171320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 127, 137, 166, 254, 274, 332, 353, 415, 508, 548, 635, 664, 685, 706, 830, 1016, 1096, 1270, 1370, 1412, 1660, 1765, 2540, 2740, 2824, 3320, 3530, 5080, 5480, 7060, 10541, 11371, 14120, 17399, 21082, 22742, 29299, 34798, 42164, 44831, 45484, 48361, 52705, 56855, 58598, 69596, 84328, 86995, 89662, 90968, 96722, 105410, 113710, 117196, 139192, 146495, 173990, 179324, 193444, 210820, 224155, 227420, 234392, 241805, 292990, 347980, 358648, 386888, 421640, 448310, 454840, 483610, 585980, 695960, 896620, 967220, 1171960, 1444117, 1793240, 1934440, 2888234, 3720973, 4013963, 5776468, 6141847, 7220585, 7441946, 8027926, 11552936, 12283694, 14441170, 14883892, 16055852, 18604865, 20069815, 24567388, 28882340, 29767784, 30709235, 32111704, 37209730, 40139630, 49134776, 57764680, 61418470, 74419460, 80279260, 122836940, 148838920, 160558520, 245673880, 509773301, 1019546602, 2039093204, 2548866505, 4078186408, 5097733010, 10195466020, 20390932040]

約数ペア:

[(1, 20390932040), (2, 10195466020), (4, 5097733010), (5, 4078186408), (8, 2548866505), (10, 2039093204), (20, 1019546602), (40, 509773301), (83, 245673880), (127, 160558520), (137, 148838920), (166, 122836940), (254, 80279260), (274, 74419460), (332, 61418470), (353, 57764680), (415, 49134776), (508, 40139630), (548, 37209730), (635, 32111704), (664, 30709235), (685, 29767784), (706, 28882340), (830, 24567388), (1016, 20069815), (1096, 18604865), (1270, 16055852), (1370, 14883892), (1412, 14441170), (1660, 12283694), (1765, 11552936), (2540, 8027926), (2740, 7441946), (2824, 7220585), (3320, 6141847), (3530, 5776468), (5080, 4013963), (5480, 3720973), (7060, 2888234), (10541, 1934440), (11371, 1793240), (14120, 1444117), (17399, 1171960), (21082, 967220), (22742, 896620), (29299, 695960), (34798, 585980), (42164, 483610), (44831, 454840), (45484, 448310), (48361, 421640), (52705, 386888), (56855, 358648), (58598, 347980), (69596, 292990), (84328, 241805), (86995, 234392), (89662, 227420), (90968, 224155), (96722, 210820), (105410, 193444), (113710, 179324), (117196, 173990), (139192, 146495)]