21496440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 74626560

約数和(自身を除く): 53130120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 157, 163, 168, 210, 280, 314, 326, 420, 471, 489, 628, 652, 785, 815, 840, 942, 978, 1099, 1141, 1256, 1304, 1570, 1630, 1884, 1956, 2198, 2282, 2355, 2445, 3140, 3260, 3297, 3423, 3768, 3912, 4396, 4564, 4710, 4890, 5495, 5705, 6280, 6520, 6594, 6846, 8792, 9128, 9420, 9780, 10990, 11410, 13188, 13692, 16485, 17115, 18840, 19560, 21980, 22820, 25591, 26376, 27384, 32970, 34230, 43960, 45640, 51182, 65940, 68460, 76773, 102364, 127955, 131880, 136920, 153546, 179137, 204728, 255910, 307092, 358274, 383865, 511820, 537411, 614184, 716548, 767730, 895685, 1023640, 1074822, 1433096, 1535460, 1791370, 2149644, 2687055, 3070920, 3582740, 4299288, 5374110, 7165480, 10748220, 21496440]

約数ペア:

[(1, 21496440), (2, 10748220), (3, 7165480), (4, 5374110), (5, 4299288), (6, 3582740), (7, 3070920), (8, 2687055), (10, 2149644), (12, 1791370), (14, 1535460), (15, 1433096), (20, 1074822), (21, 1023640), (24, 895685), (28, 767730), (30, 716548), (35, 614184), (40, 537411), (42, 511820), (56, 383865), (60, 358274), (70, 307092), (84, 255910), (105, 204728), (120, 179137), (140, 153546), (157, 136920), (163, 131880), (168, 127955), (210, 102364), (280, 76773), (314, 68460), (326, 65940), (420, 51182), (471, 45640), (489, 43960), (628, 34230), (652, 32970), (785, 27384), (815, 26376), (840, 25591), (942, 22820), (978, 21980), (1099, 19560), (1141, 18840), (1256, 17115), (1304, 16485), (1570, 13692), (1630, 13188), (1884, 11410), (1956, 10990), (2198, 9780), (2282, 9420), (2355, 9128), (2445, 8792), (3140, 6846), (3260, 6594), (3297, 6520), (3423, 6280), (3768, 5705), (3912, 5495), (4396, 4890), (4564, 4710)]