20957922

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 72

約数和(自身を含む): 49690368

約数和(自身を除く): 28732446

約数列:

[1, 2, 3, 6, 9, 18, 23, 31, 46, 62, 69, 71, 93, 138, 142, 186, 207, 213, 279, 414, 426, 529, 558, 639, 713, 1058, 1278, 1426, 1587, 1633, 2139, 2201, 3174, 3266, 4278, 4402, 4761, 4899, 6417, 6603, 9522, 9798, 12834, 13206, 14697, 16399, 19809, 29394, 32798, 37559, 39618, 49197, 50623, 75118, 98394, 101246, 112677, 147591, 151869, 225354, 295182, 303738, 338031, 455607, 676062, 911214, 1164329, 2328658, 3492987, 6985974, 10478961, 20957922]

約数ペア:

[(1, 20957922), (2, 10478961), (3, 6985974), (6, 3492987), (9, 2328658), (18, 1164329), (23, 911214), (31, 676062), (46, 455607), (62, 338031), (69, 303738), (71, 295182), (93, 225354), (138, 151869), (142, 147591), (186, 112677), (207, 101246), (213, 98394), (279, 75118), (414, 50623), (426, 49197), (529, 39618), (558, 37559), (639, 32798), (713, 29394), (1058, 19809), (1278, 16399), (1426, 14697), (1587, 13206), (1633, 12834), (2139, 9798), (2201, 9522), (3174, 6603), (3266, 6417), (4278, 4899), (4402, 4761)]