16661840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{433}}^1$

素因数の和:496

約数の個数: 80

約数和(自身を含む): 42945168

約数和(自身を除く): 26283328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 37, 40, 52, 65, 74, 80, 104, 130, 148, 185, 208, 260, 296, 370, 433, 481, 520, 592, 740, 866, 962, 1040, 1480, 1732, 1924, 2165, 2405, 2960, 3464, 3848, 4330, 4810, 5629, 6928, 7696, 8660, 9620, 11258, 16021, 17320, 19240, 22516, 28145, 32042, 34640, 38480, 45032, 56290, 64084, 80105, 90064, 112580, 128168, 160210, 208273, 225160, 256336, 320420, 416546, 450320, 640840, 833092, 1041365, 1281680, 1666184, 2082730, 3332368, 4165460, 8330920, 16661840]

約数ペア:

[(1, 16661840), (2, 8330920), (4, 4165460), (5, 3332368), (8, 2082730), (10, 1666184), (13, 1281680), (16, 1041365), (20, 833092), (26, 640840), (37, 450320), (40, 416546), (52, 320420), (65, 256336), (74, 225160), (80, 208273), (104, 160210), (130, 128168), (148, 112580), (185, 90064), (208, 80105), (260, 64084), (296, 56290), (370, 45032), (433, 38480), (481, 34640), (520, 32042), (592, 28145), (740, 22516), (866, 19240), (962, 17320), (1040, 16021), (1480, 11258), (1732, 9620), (1924, 8660), (2165, 7696), (2405, 6928), (2960, 5629), (3464, 4810), (3848, 4330)]