998555320

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1102

約数の個数: 128

約数和(自身を含む): 2658672000

約数和(自身を除く): 1660116680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 73, 98, 140, 146, 196, 245, 280, 292, 343, 365, 392, 490, 511, 584, 686, 730, 980, 997, 1022, 1372, 1460, 1715, 1960, 1994, 2044, 2555, 2744, 2920, 3430, 3577, 3988, 4088, 4985, 5110, 6860, 6979, 7154, 7976, 9970, 10220, 13720, 13958, 14308, 17885, 19940, 20440, 25039, 27916, 28616, 34895, 35770, 39880, 48853, 50078, 55832, 69790, 71540, 72781, 97706, 100156, 125195, 139580, 143080, 145562, 195412, 200312, 244265, 250390, 279160, 291124, 341971, 363905, 390824, 488530, 500780, 509467, 582248, 683942, 727810, 977060, 1001560, 1018934, 1367884, 1455620, 1709855, 1954120, 2037868, 2547335, 2735768, 2911240, 3419710, 3566269, 4075736, 5094670, 6839420, 7132538, 10189340, 13678840, 14265076, 17831345, 20378680, 24963883, 28530152, 35662690, 49927766, 71325380, 99855532, 124819415, 142650760, 199711064, 249638830, 499277660, 998555320]

約数ペア:

[(1, 998555320), (2, 499277660), (4, 249638830), (5, 199711064), (7, 142650760), (8, 124819415), (10, 99855532), (14, 71325380), (20, 49927766), (28, 35662690), (35, 28530152), (40, 24963883), (49, 20378680), (56, 17831345), (70, 14265076), (73, 13678840), (98, 10189340), (140, 7132538), (146, 6839420), (196, 5094670), (245, 4075736), (280, 3566269), (292, 3419710), (343, 2911240), (365, 2735768), (392, 2547335), (490, 2037868), (511, 1954120), (584, 1709855), (686, 1455620), (730, 1367884), (980, 1018934), (997, 1001560), (1022, 977060), (1372, 727810), (1460, 683942), (1715, 582248), (1960, 509467), (1994, 500780), (2044, 488530), (2555, 390824), (2744, 363905), (2920, 341971), (3430, 291124), (3577, 279160), (3988, 250390), (4088, 244265), (4985, 200312), (5110, 195412), (6860, 145562), (6979, 143080), (7154, 139580), (7976, 125195), (9970, 100156), (10220, 97706), (13720, 72781), (13958, 71540), (14308, 69790), (17885, 55832), (19940, 50078), (20440, 48853), (25039, 39880), (27916, 35770), (28616, 34895)]