281009920

素因数分解:

$2^8\times 5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^2$

素因数の和:202

約数の個数: 108

約数和(自身を含む): 695920680

約数和(自身を除く): 414910760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 61, 64, 80, 118, 122, 128, 160, 236, 244, 256, 295, 305, 320, 472, 488, 590, 610, 640, 944, 976, 1180, 1220, 1280, 1888, 1952, 2360, 2440, 3599, 3721, 3776, 3904, 4720, 4880, 7198, 7442, 7552, 7808, 9440, 9760, 14396, 14884, 15104, 15616, 17995, 18605, 18880, 19520, 28792, 29768, 35990, 37210, 37760, 39040, 57584, 59536, 71980, 74420, 75520, 78080, 115168, 119072, 143960, 148840, 219539, 230336, 238144, 287920, 297680, 439078, 460672, 476288, 575840, 595360, 878156, 921344, 952576, 1097695, 1151680, 1190720, 1756312, 2195390, 2303360, 2381440, 3512624, 4390780, 4606720, 4762880, 7025248, 8781560, 14050496, 17563120, 28100992, 35126240, 56201984, 70252480, 140504960, 281009920]

約数ペア:

[(1, 281009920), (2, 140504960), (4, 70252480), (5, 56201984), (8, 35126240), (10, 28100992), (16, 17563120), (20, 14050496), (32, 8781560), (40, 7025248), (59, 4762880), (61, 4606720), (64, 4390780), (80, 3512624), (118, 2381440), (122, 2303360), (128, 2195390), (160, 1756312), (236, 1190720), (244, 1151680), (256, 1097695), (295, 952576), (305, 921344), (320, 878156), (472, 595360), (488, 575840), (590, 476288), (610, 460672), (640, 439078), (944, 297680), (976, 287920), (1180, 238144), (1220, 230336), (1280, 219539), (1888, 148840), (1952, 143960), (2360, 119072), (2440, 115168), (3599, 78080), (3721, 75520), (3776, 74420), (3904, 71980), (4720, 59536), (4880, 57584), (7198, 39040), (7442, 37760), (7552, 37210), (7808, 35990), (9440, 29768), (9760, 28792), (14396, 19520), (14884, 18880), (15104, 18605), (15616, 17995)]