20031890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:255

約数の個数: 48

約数和(自身を含む): 39502080

約数和(自身を除く): 19470190

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 179, 190, 310, 358, 361, 589, 722, 895, 1178, 1790, 1805, 2945, 3401, 3610, 5549, 5890, 6802, 11098, 11191, 17005, 22382, 27745, 34010, 55490, 55955, 64619, 105431, 111910, 129238, 210862, 323095, 527155, 646190, 1054310, 2003189, 4006378, 10015945, 20031890]

約数ペア:

[(1, 20031890), (2, 10015945), (5, 4006378), (10, 2003189), (19, 1054310), (31, 646190), (38, 527155), (62, 323095), (95, 210862), (155, 129238), (179, 111910), (190, 105431), (310, 64619), (358, 55955), (361, 55490), (589, 34010), (722, 27745), (895, 22382), (1178, 17005), (1790, 11191), (1805, 11098), (2945, 6802), (3401, 5890), (3610, 5549)]