815220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{647}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 2830464

約数和(自身を除く): 2015244

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 647, 1260, 1294, 1941, 2588, 3235, 3882, 4529, 5823, 6470, 7764, 9058, 9705, 11646, 12940, 13587, 18116, 19410, 22645, 23292, 27174, 29115, 38820, 40761, 45290, 54348, 58230, 67935, 81522, 90580, 116460, 135870, 163044, 203805, 271740, 407610, 815220]

約数ペア:

[(1, 815220), (2, 407610), (3, 271740), (4, 203805), (5, 163044), (6, 135870), (7, 116460), (9, 90580), (10, 81522), (12, 67935), (14, 58230), (15, 54348), (18, 45290), (20, 40761), (21, 38820), (28, 29115), (30, 27174), (35, 23292), (36, 22645), (42, 19410), (45, 18116), (60, 13587), (63, 12940), (70, 11646), (84, 9705), (90, 9058), (105, 7764), (126, 6470), (140, 5823), (180, 4529), (210, 3882), (252, 3235), (315, 2588), (420, 1941), (630, 1294), (647, 1260)]