20899290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{953}}^1$

素因数の和:1023

約数の個数: 64

約数和(自身を含む): 54400896

約数和(自身を除く): 33501606

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 43, 51, 85, 86, 102, 129, 170, 215, 255, 258, 430, 510, 645, 731, 953, 1290, 1462, 1906, 2193, 2859, 3655, 4386, 4765, 5718, 7310, 9530, 10965, 14295, 16201, 21930, 28590, 32402, 40979, 48603, 81005, 81958, 97206, 122937, 162010, 204895, 243015, 245874, 409790, 486030, 614685, 696643, 1229370, 1393286, 2089929, 3483215, 4179858, 6966430, 10449645, 20899290]

約数ペア:

[(1, 20899290), (2, 10449645), (3, 6966430), (5, 4179858), (6, 3483215), (10, 2089929), (15, 1393286), (17, 1229370), (30, 696643), (34, 614685), (43, 486030), (51, 409790), (85, 245874), (86, 243015), (102, 204895), (129, 162010), (170, 122937), (215, 97206), (255, 81958), (258, 81005), (430, 48603), (510, 40979), (645, 32402), (731, 28590), (953, 21930), (1290, 16201), (1462, 14295), (1906, 10965), (2193, 9530), (2859, 7310), (3655, 5718), (4386, 4765)]