781620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1861}}^1$

素因数の和:1880

約数の個数: 48

約数和(自身を含む): 2502528

約数和(自身を除く): 1720908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1861, 3722, 5583, 7444, 9305, 11166, 13027, 18610, 22332, 26054, 27915, 37220, 39081, 52108, 55830, 65135, 78162, 111660, 130270, 156324, 195405, 260540, 390810, 781620]

約数ペア:

[(1, 781620), (2, 390810), (3, 260540), (4, 195405), (5, 156324), (6, 130270), (7, 111660), (10, 78162), (12, 65135), (14, 55830), (15, 52108), (20, 39081), (21, 37220), (28, 27915), (30, 26054), (35, 22332), (42, 18610), (60, 13027), (70, 11166), (84, 9305), (105, 7444), (140, 5583), (210, 3722), (420, 1861)]