18889040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:109

約数の個数: 120

約数和(自身を含む): 50249760

約数和(自身を除く): 31360720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 34, 38, 40, 43, 68, 76, 80, 85, 86, 95, 136, 152, 170, 172, 190, 215, 272, 289, 304, 323, 340, 344, 380, 430, 578, 646, 680, 688, 731, 760, 817, 860, 1156, 1292, 1360, 1445, 1462, 1520, 1615, 1634, 1720, 2312, 2584, 2890, 2924, 3230, 3268, 3440, 3655, 4085, 4624, 5168, 5491, 5780, 5848, 6460, 6536, 7310, 8170, 10982, 11560, 11696, 12427, 12920, 13072, 13889, 14620, 16340, 21964, 23120, 24854, 25840, 27455, 27778, 29240, 32680, 43928, 49708, 54910, 55556, 58480, 62135, 65360, 69445, 87856, 99416, 109820, 111112, 124270, 138890, 198832, 219640, 222224, 236113, 248540, 277780, 439280, 472226, 497080, 555560, 944452, 994160, 1111120, 1180565, 1888904, 2361130, 3777808, 4722260, 9444520, 18889040]

約数ペア:

[(1, 18889040), (2, 9444520), (4, 4722260), (5, 3777808), (8, 2361130), (10, 1888904), (16, 1180565), (17, 1111120), (19, 994160), (20, 944452), (34, 555560), (38, 497080), (40, 472226), (43, 439280), (68, 277780), (76, 248540), (80, 236113), (85, 222224), (86, 219640), (95, 198832), (136, 138890), (152, 124270), (170, 111112), (172, 109820), (190, 99416), (215, 87856), (272, 69445), (289, 65360), (304, 62135), (323, 58480), (340, 55556), (344, 54910), (380, 49708), (430, 43928), (578, 32680), (646, 29240), (680, 27778), (688, 27455), (731, 25840), (760, 24854), (817, 23120), (860, 21964), (1156, 16340), (1292, 14620), (1360, 13889), (1445, 13072), (1462, 12920), (1520, 12427), (1615, 11696), (1634, 11560), (1720, 10982), (2312, 8170), (2584, 7310), (2890, 6536), (2924, 6460), (3230, 5848), (3268, 5780), (3440, 5491), (3655, 5168), (4085, 4624)]