644804560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{16349}}^1$

素因数の和:16408

約数の個数: 80

約数和(自身を含む): 1642194000

約数和(自身を除く): 997389440

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 68, 80, 85, 116, 136, 145, 170, 232, 272, 290, 340, 464, 493, 580, 680, 986, 1160, 1360, 1972, 2320, 2465, 3944, 4930, 7888, 9860, 16349, 19720, 32698, 39440, 65396, 81745, 130792, 163490, 261584, 277933, 326980, 474121, 555866, 653960, 948242, 1111732, 1307920, 1389665, 1896484, 2223464, 2370605, 2779330, 3792968, 4446928, 4741210, 5558660, 7585936, 8060057, 9482420, 11117320, 16120114, 18964840, 22234640, 32240228, 37929680, 40300285, 64480456, 80600570, 128960912, 161201140, 322402280, 644804560]

約数ペア:

[(1, 644804560), (2, 322402280), (4, 161201140), (5, 128960912), (8, 80600570), (10, 64480456), (16, 40300285), (17, 37929680), (20, 32240228), (29, 22234640), (34, 18964840), (40, 16120114), (58, 11117320), (68, 9482420), (80, 8060057), (85, 7585936), (116, 5558660), (136, 4741210), (145, 4446928), (170, 3792968), (232, 2779330), (272, 2370605), (290, 2223464), (340, 1896484), (464, 1389665), (493, 1307920), (580, 1111732), (680, 948242), (986, 653960), (1160, 555866), (1360, 474121), (1972, 326980), (2320, 277933), (2465, 261584), (3944, 163490), (4930, 130792), (7888, 81745), (9860, 65396), (16349, 39440), (19720, 32698)]