20968920

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:234

約数の個数: 192

約数和(自身を含む): 79859520

約数和(自身を除く): 58890600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 53, 56, 60, 63, 70, 72, 84, 90, 105, 106, 120, 126, 140, 157, 159, 168, 180, 210, 212, 252, 265, 280, 314, 315, 318, 360, 371, 420, 424, 471, 477, 504, 530, 628, 630, 636, 742, 785, 795, 840, 942, 954, 1060, 1099, 1113, 1256, 1260, 1272, 1413, 1484, 1570, 1590, 1855, 1884, 1908, 2120, 2198, 2226, 2355, 2385, 2520, 2826, 2968, 3140, 3180, 3297, 3339, 3710, 3768, 3816, 4396, 4452, 4710, 4770, 5495, 5565, 5652, 6280, 6360, 6594, 6678, 7065, 7420, 8321, 8792, 8904, 9420, 9540, 9891, 10990, 11130, 11304, 13188, 13356, 14130, 14840, 16485, 16642, 16695, 18840, 19080, 19782, 21980, 22260, 24963, 26376, 26712, 28260, 32970, 33284, 33390, 39564, 41605, 43960, 44520, 49455, 49926, 56520, 58247, 65940, 66568, 66780, 74889, 79128, 83210, 98910, 99852, 116494, 124815, 131880, 133560, 149778, 166420, 174741, 197820, 199704, 232988, 249630, 291235, 299556, 332840, 349482, 374445, 395640, 465976, 499260, 524223, 582470, 599112, 698964, 748890, 873705, 998520, 1048446, 1164940, 1397928, 1497780, 1747410, 2096892, 2329880, 2621115, 2995560, 3494820, 4193784, 5242230, 6989640, 10484460, 20968920]

約数ペア:

[(1, 20968920), (2, 10484460), (3, 6989640), (4, 5242230), (5, 4193784), (6, 3494820), (7, 2995560), (8, 2621115), (9, 2329880), (10, 2096892), (12, 1747410), (14, 1497780), (15, 1397928), (18, 1164940), (20, 1048446), (21, 998520), (24, 873705), (28, 748890), (30, 698964), (35, 599112), (36, 582470), (40, 524223), (42, 499260), (45, 465976), (53, 395640), (56, 374445), (60, 349482), (63, 332840), (70, 299556), (72, 291235), (84, 249630), (90, 232988), (105, 199704), (106, 197820), (120, 174741), (126, 166420), (140, 149778), (157, 133560), (159, 131880), (168, 124815), (180, 116494), (210, 99852), (212, 98910), (252, 83210), (265, 79128), (280, 74889), (314, 66780), (315, 66568), (318, 65940), (360, 58247), (371, 56520), (420, 49926), (424, 49455), (471, 44520), (477, 43960), (504, 41605), (530, 39564), (628, 33390), (630, 33284), (636, 32970), (742, 28260), (785, 26712), (795, 26376), (840, 24963), (942, 22260), (954, 21980), (1060, 19782), (1099, 19080), (1113, 18840), (1256, 16695), (1260, 16642), (1272, 16485), (1413, 14840), (1484, 14130), (1570, 13356), (1590, 13188), (1855, 11304), (1884, 11130), (1908, 10990), (2120, 9891), (2198, 9540), (2226, 9420), (2355, 8904), (2385, 8792), (2520, 8321), (2826, 7420), (2968, 7065), (3140, 6678), (3180, 6594), (3297, 6360), (3339, 6280), (3710, 5652), (3768, 5565), (3816, 5495), (4396, 4770), (4452, 4710)]