20050400

素因数分解:

$2^5\times 5^2\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:444

約数の個数: 72

約数和(自身を含む): 49778064

約数和(自身を除く): 29727664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 71, 80, 100, 142, 160, 200, 284, 353, 355, 400, 568, 706, 710, 800, 1136, 1412, 1420, 1765, 1775, 2272, 2824, 2840, 3530, 3550, 5648, 5680, 7060, 7100, 8825, 11296, 11360, 14120, 14200, 17650, 25063, 28240, 28400, 35300, 50126, 56480, 56800, 70600, 100252, 125315, 141200, 200504, 250630, 282400, 401008, 501260, 626575, 802016, 1002520, 1253150, 2005040, 2506300, 4010080, 5012600, 10025200, 20050400]

約数ペア:

[(1, 20050400), (2, 10025200), (4, 5012600), (5, 4010080), (8, 2506300), (10, 2005040), (16, 1253150), (20, 1002520), (25, 802016), (32, 626575), (40, 501260), (50, 401008), (71, 282400), (80, 250630), (100, 200504), (142, 141200), (160, 125315), (200, 100252), (284, 70600), (353, 56800), (355, 56480), (400, 50126), (568, 35300), (706, 28400), (710, 28240), (800, 25063), (1136, 17650), (1412, 14200), (1420, 14120), (1765, 11360), (1775, 11296), (2272, 8825), (2824, 7100), (2840, 7060), (3530, 5680), (3550, 5648)]