4020705

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:135

約数の個数: 64

約数和(自身を含む): 8064000

約数和(自身を除く): 4043295

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 39, 45, 65, 79, 87, 117, 135, 145, 195, 237, 261, 351, 377, 395, 435, 585, 711, 783, 1027, 1131, 1185, 1305, 1755, 1885, 2133, 2291, 3081, 3393, 3555, 3915, 5135, 5655, 6873, 9243, 10179, 10665, 11455, 15405, 16965, 20619, 27729, 29783, 34365, 46215, 50895, 61857, 89349, 103095, 138645, 148915, 268047, 309285, 446745, 804141, 1340235, 4020705]

約数ペア:

[(1, 4020705), (3, 1340235), (5, 804141), (9, 446745), (13, 309285), (15, 268047), (27, 148915), (29, 138645), (39, 103095), (45, 89349), (65, 61857), (79, 50895), (87, 46215), (117, 34365), (135, 29783), (145, 27729), (195, 20619), (237, 16965), (261, 15405), (351, 11455), (377, 10665), (395, 10179), (435, 9243), (585, 6873), (711, 5655), (783, 5135), (1027, 3915), (1131, 3555), (1185, 3393), (1305, 3081), (1755, 2291), (1885, 2133)]