21869820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1021}}^1$

素因数の和:1060

約数の個数: 144

約数和(自身を含む): 80353728

約数和(自身を除く): 58483908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 51, 60, 63, 68, 70, 84, 85, 90, 102, 105, 119, 126, 140, 153, 170, 180, 204, 210, 238, 252, 255, 306, 315, 340, 357, 420, 476, 510, 595, 612, 630, 714, 765, 1020, 1021, 1071, 1190, 1260, 1428, 1530, 1785, 2042, 2142, 2380, 3060, 3063, 3570, 4084, 4284, 5105, 5355, 6126, 7140, 7147, 9189, 10210, 10710, 12252, 14294, 15315, 17357, 18378, 20420, 21420, 21441, 28588, 30630, 34714, 35735, 36756, 42882, 45945, 52071, 61260, 64323, 69428, 71470, 85764, 86785, 91890, 104142, 107205, 121499, 128646, 142940, 156213, 173570, 183780, 208284, 214410, 242998, 257292, 260355, 312426, 321615, 347140, 364497, 428820, 485996, 520710, 607495, 624852, 643230, 728994, 781065, 1041420, 1093491, 1214990, 1286460, 1457988, 1562130, 1822485, 2186982, 2429980, 3124260, 3644970, 4373964, 5467455, 7289940, 10934910, 21869820]

約数ペア:

[(1, 21869820), (2, 10934910), (3, 7289940), (4, 5467455), (5, 4373964), (6, 3644970), (7, 3124260), (9, 2429980), (10, 2186982), (12, 1822485), (14, 1562130), (15, 1457988), (17, 1286460), (18, 1214990), (20, 1093491), (21, 1041420), (28, 781065), (30, 728994), (34, 643230), (35, 624852), (36, 607495), (42, 520710), (45, 485996), (51, 428820), (60, 364497), (63, 347140), (68, 321615), (70, 312426), (84, 260355), (85, 257292), (90, 242998), (102, 214410), (105, 208284), (119, 183780), (126, 173570), (140, 156213), (153, 142940), (170, 128646), (180, 121499), (204, 107205), (210, 104142), (238, 91890), (252, 86785), (255, 85764), (306, 71470), (315, 69428), (340, 64323), (357, 61260), (420, 52071), (476, 45945), (510, 42882), (595, 36756), (612, 35735), (630, 34714), (714, 30630), (765, 28588), (1020, 21441), (1021, 21420), (1071, 20420), (1190, 18378), (1260, 17357), (1428, 15315), (1530, 14294), (1785, 12252), (2042, 10710), (2142, 10210), (2380, 9189), (3060, 7147), (3063, 7140), (3570, 6126), (4084, 5355), (4284, 5105)]