19700625

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:128

約数の個数: 80

約数和(自身を含む): 39987200

約数和(自身を除く): 20286575

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 79, 95, 105, 125, 133, 175, 237, 285, 375, 395, 399, 475, 525, 553, 625, 665, 875, 1185, 1425, 1501, 1659, 1875, 1975, 1995, 2375, 2625, 2765, 3325, 4375, 4503, 5925, 7125, 7505, 8295, 9875, 9975, 10507, 11875, 13125, 13825, 16625, 22515, 29625, 31521, 35625, 37525, 41475, 49375, 49875, 52535, 69125, 83125, 112575, 148125, 157605, 187625, 207375, 249375, 262675, 345625, 562875, 788025, 938125, 1036875, 1313375, 2814375, 3940125, 6566875, 19700625]

約数ペア:

[(1, 19700625), (3, 6566875), (5, 3940125), (7, 2814375), (15, 1313375), (19, 1036875), (21, 938125), (25, 788025), (35, 562875), (57, 345625), (75, 262675), (79, 249375), (95, 207375), (105, 187625), (125, 157605), (133, 148125), (175, 112575), (237, 83125), (285, 69125), (375, 52535), (395, 49875), (399, 49375), (475, 41475), (525, 37525), (553, 35625), (625, 31521), (665, 29625), (875, 22515), (1185, 16625), (1425, 13825), (1501, 13125), (1659, 11875), (1875, 10507), (1975, 9975), (1995, 9875), (2375, 8295), (2625, 7505), (2765, 7125), (3325, 5925), (4375, 4503)]