20018539970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{128431}}^1$

素因数の和:128571

約数の個数: 64

約数和(自身を含む): 42721620480

約数和(自身を除く): 22703080510

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 109, 110, 130, 143, 218, 286, 545, 715, 1090, 1199, 1417, 1430, 2398, 2834, 5995, 7085, 11990, 14170, 15587, 31174, 77935, 128431, 155870, 256862, 642155, 1284310, 1412741, 1669603, 2825482, 3339206, 7063705, 8348015, 13998979, 14127410, 16696030, 18365633, 27997958, 36731266, 69994895, 91828165, 139989790, 153988769, 181986727, 183656330, 307977538, 363973454, 769943845, 909933635, 1539887690, 1819867270, 2001853997, 4003707994, 10009269985, 20018539970]

約数ペア:

[(1, 20018539970), (2, 10009269985), (5, 4003707994), (10, 2001853997), (11, 1819867270), (13, 1539887690), (22, 909933635), (26, 769943845), (55, 363973454), (65, 307977538), (109, 183656330), (110, 181986727), (130, 153988769), (143, 139989790), (218, 91828165), (286, 69994895), (545, 36731266), (715, 27997958), (1090, 18365633), (1199, 16696030), (1417, 14127410), (1430, 13998979), (2398, 8348015), (2834, 7063705), (5995, 3339206), (7085, 2825482), (11990, 1669603), (14170, 1412741), (15587, 1284310), (31174, 642155), (77935, 256862), (128431, 155870)]