20734815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:160

約数の個数: 64

約数和(自身を含む): 37711872

約数和(自身を除く): 16977057

約数列:

[1, 3, 5, 15, 17, 31, 43, 51, 61, 85, 93, 129, 155, 183, 215, 255, 305, 465, 527, 645, 731, 915, 1037, 1333, 1581, 1891, 2193, 2623, 2635, 3111, 3655, 3999, 5185, 5673, 6665, 7869, 7905, 9455, 10965, 13115, 15555, 19995, 22661, 28365, 32147, 39345, 44591, 67983, 81313, 96441, 113305, 133773, 160735, 222955, 243939, 339915, 406565, 482205, 668865, 1219695, 1382321, 4146963, 6911605, 20734815]

約数ペア:

[(1, 20734815), (3, 6911605), (5, 4146963), (15, 1382321), (17, 1219695), (31, 668865), (43, 482205), (51, 406565), (61, 339915), (85, 243939), (93, 222955), (129, 160735), (155, 133773), (183, 113305), (215, 96441), (255, 81313), (305, 67983), (465, 44591), (527, 39345), (645, 32147), (731, 28365), (915, 22661), (1037, 19995), (1333, 15555), (1581, 13115), (1891, 10965), (2193, 9455), (2623, 7905), (2635, 7869), (3111, 6665), (3655, 5673), (3999, 5185)]