81889240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 199979280

約数和(自身を除く): 118090040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 107, 152, 190, 212, 214, 265, 361, 380, 424, 428, 530, 535, 722, 760, 856, 1007, 1060, 1070, 1444, 1805, 2014, 2033, 2120, 2140, 2888, 3610, 4028, 4066, 4280, 5035, 5671, 7220, 8056, 8132, 10070, 10165, 11342, 14440, 16264, 19133, 20140, 20330, 22684, 28355, 38266, 38627, 40280, 40660, 45368, 56710, 76532, 77254, 81320, 95665, 107749, 113420, 153064, 154508, 191330, 193135, 215498, 226840, 309016, 382660, 386270, 430996, 538745, 765320, 772540, 861992, 1077490, 1545080, 2047231, 2154980, 4094462, 4309960, 8188924, 10236155, 16377848, 20472310, 40944620, 81889240]

約数ペア:

[(1, 81889240), (2, 40944620), (4, 20472310), (5, 16377848), (8, 10236155), (10, 8188924), (19, 4309960), (20, 4094462), (38, 2154980), (40, 2047231), (53, 1545080), (76, 1077490), (95, 861992), (106, 772540), (107, 765320), (152, 538745), (190, 430996), (212, 386270), (214, 382660), (265, 309016), (361, 226840), (380, 215498), (424, 193135), (428, 191330), (530, 154508), (535, 153064), (722, 113420), (760, 107749), (856, 95665), (1007, 81320), (1060, 77254), (1070, 76532), (1444, 56710), (1805, 45368), (2014, 40660), (2033, 40280), (2120, 38627), (2140, 38266), (2888, 28355), (3610, 22684), (4028, 20330), (4066, 20140), (4280, 19133), (5035, 16264), (5671, 14440), (7220, 11342), (8056, 10165), (8132, 10070)]