345654320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{3889}}^1$

素因数の和:4014

約数の個数: 80

約数和(自身を含む): 885612960

約数和(自身を除く): 539958640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 101, 110, 176, 202, 220, 404, 440, 505, 808, 880, 1010, 1111, 1616, 2020, 2222, 3889, 4040, 4444, 5555, 7778, 8080, 8888, 11110, 15556, 17776, 19445, 22220, 31112, 38890, 42779, 44440, 62224, 77780, 85558, 88880, 155560, 171116, 213895, 311120, 342232, 392789, 427790, 684464, 785578, 855580, 1571156, 1711160, 1963945, 3142312, 3422320, 3927890, 4320679, 6284624, 7855780, 8641358, 15711560, 17282716, 21603395, 31423120, 34565432, 43206790, 69130864, 86413580, 172827160, 345654320]

約数ペア:

[(1, 345654320), (2, 172827160), (4, 86413580), (5, 69130864), (8, 43206790), (10, 34565432), (11, 31423120), (16, 21603395), (20, 17282716), (22, 15711560), (40, 8641358), (44, 7855780), (55, 6284624), (80, 4320679), (88, 3927890), (101, 3422320), (110, 3142312), (176, 1963945), (202, 1711160), (220, 1571156), (404, 855580), (440, 785578), (505, 684464), (808, 427790), (880, 392789), (1010, 342232), (1111, 311120), (1616, 213895), (2020, 171116), (2222, 155560), (3889, 88880), (4040, 85558), (4444, 77780), (5555, 62224), (7778, 44440), (8080, 42779), (8888, 38890), (11110, 31112), (15556, 22220), (17776, 19445)]