20935395

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 40857600

約数和(自身を除く): 19922205

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 79, 117, 135, 151, 195, 237, 351, 395, 453, 585, 711, 755, 1027, 1185, 1359, 1755, 1963, 2133, 2265, 3081, 3555, 4077, 5135, 5889, 6795, 9243, 9815, 10665, 11929, 15405, 17667, 20385, 27729, 29445, 35787, 46215, 53001, 59645, 88335, 107361, 138645, 155077, 178935, 265005, 322083, 465231, 536805, 775385, 1395693, 1610415, 2326155, 4187079, 6978465, 20935395]

約数ペア:

[(1, 20935395), (3, 6978465), (5, 4187079), (9, 2326155), (13, 1610415), (15, 1395693), (27, 775385), (39, 536805), (45, 465231), (65, 322083), (79, 265005), (117, 178935), (135, 155077), (151, 138645), (195, 107361), (237, 88335), (351, 59645), (395, 53001), (453, 46215), (585, 35787), (711, 29445), (755, 27729), (1027, 20385), (1185, 17667), (1359, 15405), (1755, 11929), (1963, 10665), (2133, 9815), (2265, 9243), (3081, 6795), (3555, 5889), (4077, 5135)]