21503270

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{293}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 40007520

約数和(自身を除く): 18504250

約数列:

[1, 2, 5, 10, 41, 82, 179, 205, 293, 358, 410, 586, 895, 1465, 1790, 2930, 7339, 12013, 14678, 24026, 36695, 52447, 60065, 73390, 104894, 120130, 262235, 524470, 2150327, 4300654, 10751635, 21503270]

約数ペア:

[(1, 21503270), (2, 10751635), (5, 4300654), (10, 2150327), (41, 524470), (82, 262235), (179, 120130), (205, 104894), (293, 73390), (358, 60065), (410, 52447), (586, 36695), (895, 24026), (1465, 14678), (1790, 12013), (2930, 7339)]