217985208

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 642816000

約数和(自身を除く): 424830792

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 61, 84, 89, 122, 168, 178, 183, 239, 244, 267, 356, 366, 427, 478, 488, 534, 623, 712, 717, 732, 854, 956, 1068, 1246, 1281, 1434, 1464, 1673, 1708, 1869, 1912, 2136, 2492, 2562, 2868, 3346, 3416, 3738, 4984, 5019, 5124, 5429, 5736, 6692, 7476, 10038, 10248, 10858, 13384, 14579, 14952, 16287, 20076, 21271, 21716, 29158, 32574, 38003, 40152, 42542, 43432, 43737, 58316, 63813, 65148, 76006, 85084, 87474, 102053, 114009, 116632, 127626, 130296, 148897, 152012, 170168, 174948, 204106, 228018, 255252, 297794, 304024, 306159, 349896, 408212, 446691, 456036, 510504, 595588, 612318, 816424, 893382, 912072, 1191176, 1224636, 1297531, 1786764, 2449272, 2595062, 3573528, 3892593, 5190124, 7785186, 9082717, 10380248, 15570372, 18165434, 27248151, 31140744, 36330868, 54496302, 72661736, 108992604, 217985208]

約数ペア:

[(1, 217985208), (2, 108992604), (3, 72661736), (4, 54496302), (6, 36330868), (7, 31140744), (8, 27248151), (12, 18165434), (14, 15570372), (21, 10380248), (24, 9082717), (28, 7785186), (42, 5190124), (56, 3892593), (61, 3573528), (84, 2595062), (89, 2449272), (122, 1786764), (168, 1297531), (178, 1224636), (183, 1191176), (239, 912072), (244, 893382), (267, 816424), (356, 612318), (366, 595588), (427, 510504), (478, 456036), (488, 446691), (534, 408212), (623, 349896), (712, 306159), (717, 304024), (732, 297794), (854, 255252), (956, 228018), (1068, 204106), (1246, 174948), (1281, 170168), (1434, 152012), (1464, 148897), (1673, 130296), (1708, 127626), (1869, 116632), (1912, 114009), (2136, 102053), (2492, 87474), (2562, 85084), (2868, 76006), (3346, 65148), (3416, 63813), (3738, 58316), (4984, 43737), (5019, 43432), (5124, 42542), (5429, 40152), (5736, 38003), (6692, 32574), (7476, 29158), (10038, 21716), (10248, 21271), (10858, 20076), (13384, 16287), (14579, 14952)]