20787975

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:158

約数の個数: 96

約数和(自身を含む): 43330560

約数和(自身を除く): 22542585

約数列:

[1, 3, 5, 9, 13, 15, 23, 25, 27, 39, 45, 65, 69, 75, 103, 115, 117, 135, 195, 207, 225, 299, 309, 325, 345, 351, 515, 575, 585, 621, 675, 897, 927, 975, 1035, 1339, 1495, 1545, 1725, 1755, 2369, 2575, 2691, 2781, 2925, 3105, 4017, 4485, 4635, 5175, 6695, 7107, 7475, 7725, 8073, 8775, 11845, 12051, 13455, 13905, 15525, 20085, 21321, 22425, 23175, 30797, 33475, 35535, 36153, 40365, 59225, 60255, 63963, 67275, 69525, 92391, 100425, 106605, 153985, 177675, 180765, 201825, 277173, 301275, 319815, 461955, 533025, 769925, 831519, 903825, 1385865, 1599075, 2309775, 4157595, 6929325, 20787975]

約数ペア:

[(1, 20787975), (3, 6929325), (5, 4157595), (9, 2309775), (13, 1599075), (15, 1385865), (23, 903825), (25, 831519), (27, 769925), (39, 533025), (45, 461955), (65, 319815), (69, 301275), (75, 277173), (103, 201825), (115, 180765), (117, 177675), (135, 153985), (195, 106605), (207, 100425), (225, 92391), (299, 69525), (309, 67275), (325, 63963), (345, 60255), (351, 59225), (515, 40365), (575, 36153), (585, 35535), (621, 33475), (675, 30797), (897, 23175), (927, 22425), (975, 21321), (1035, 20085), (1339, 15525), (1495, 13905), (1545, 13455), (1725, 12051), (1755, 11845), (2369, 8775), (2575, 8073), (2691, 7725), (2781, 7475), (2925, 7107), (3105, 6695), (4017, 5175), (4485, 4635)]