128708640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{89381}}^1$

素因数の和:89402

約数の個数: 72

約数和(自身を含む): 439223148

約数和(自身を除く): 310514508

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 89381, 178762, 268143, 357524, 446905, 536286, 715048, 804429, 893810, 1072572, 1340715, 1430096, 1608858, 1787620, 2145144, 2681430, 2860192, 3217716, 3575240, 4022145, 4290288, 5362860, 6435432, 7150480, 8044290, 8580576, 10725720, 12870864, 14300960, 16088580, 21451440, 25741728, 32177160, 42902880, 64354320, 128708640]

約数ペア:

[(1, 128708640), (2, 64354320), (3, 42902880), (4, 32177160), (5, 25741728), (6, 21451440), (8, 16088580), (9, 14300960), (10, 12870864), (12, 10725720), (15, 8580576), (16, 8044290), (18, 7150480), (20, 6435432), (24, 5362860), (30, 4290288), (32, 4022145), (36, 3575240), (40, 3217716), (45, 2860192), (48, 2681430), (60, 2145144), (72, 1787620), (80, 1608858), (90, 1430096), (96, 1340715), (120, 1072572), (144, 893810), (160, 804429), (180, 715048), (240, 536286), (288, 446905), (360, 357524), (480, 268143), (720, 178762), (1440, 89381)]