19888250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 20546950

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 53, 79, 95, 106, 125, 158, 190, 250, 265, 395, 475, 530, 790, 950, 1007, 1325, 1501, 1975, 2014, 2375, 2650, 3002, 3950, 4187, 4750, 5035, 6625, 7505, 8374, 9875, 10070, 13250, 15010, 19750, 20935, 25175, 37525, 41870, 50350, 75050, 79553, 104675, 125875, 159106, 187625, 209350, 251750, 375250, 397765, 523375, 795530, 1046750, 1988825, 3977650, 9944125, 19888250]

約数ペア:

[(1, 19888250), (2, 9944125), (5, 3977650), (10, 1988825), (19, 1046750), (25, 795530), (38, 523375), (50, 397765), (53, 375250), (79, 251750), (95, 209350), (106, 187625), (125, 159106), (158, 125875), (190, 104675), (250, 79553), (265, 75050), (395, 50350), (475, 41870), (530, 37525), (790, 25175), (950, 20935), (1007, 19750), (1325, 15010), (1501, 13250), (1975, 10070), (2014, 9875), (2375, 8374), (2650, 7505), (3002, 6625), (3950, 5035), (4187, 4750)]