19238870

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 22233130

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 79, 98, 142, 158, 245, 343, 355, 395, 490, 497, 553, 686, 710, 790, 994, 1106, 1715, 2485, 2765, 3430, 3479, 3871, 4970, 5530, 5609, 6958, 7742, 11218, 17395, 19355, 24353, 27097, 28045, 34790, 38710, 39263, 48706, 54194, 56090, 78526, 121765, 135485, 196315, 243530, 270970, 274841, 392630, 549682, 1374205, 1923887, 2748410, 3847774, 9619435, 19238870]

約数ペア:

[(1, 19238870), (2, 9619435), (5, 3847774), (7, 2748410), (10, 1923887), (14, 1374205), (35, 549682), (49, 392630), (70, 274841), (71, 270970), (79, 243530), (98, 196315), (142, 135485), (158, 121765), (245, 78526), (343, 56090), (355, 54194), (395, 48706), (490, 39263), (497, 38710), (553, 34790), (686, 28045), (710, 27097), (790, 24353), (994, 19355), (1106, 17395), (1715, 11218), (2485, 7742), (2765, 6958), (3430, 5609), (3479, 5530), (3871, 4970)]