213080320

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2729}}^1$

素因数の和:2811

約数の個数: 72

約数和(自身を含む): 518951160

約数和(自身を除く): 305870840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 2729, 3904, 4880, 5458, 7808, 9760, 10916, 13645, 15616, 19520, 21832, 27290, 39040, 43664, 54580, 78080, 87328, 109160, 166469, 174656, 218320, 332938, 349312, 436640, 665876, 698624, 832345, 873280, 1331752, 1664690, 1746560, 2663504, 3329380, 3493120, 5327008, 6658760, 10654016, 13317520, 21308032, 26635040, 42616064, 53270080, 106540160, 213080320]

約数ペア:

[(1, 213080320), (2, 106540160), (4, 53270080), (5, 42616064), (8, 26635040), (10, 21308032), (16, 13317520), (20, 10654016), (32, 6658760), (40, 5327008), (61, 3493120), (64, 3329380), (80, 2663504), (122, 1746560), (128, 1664690), (160, 1331752), (244, 873280), (256, 832345), (305, 698624), (320, 665876), (488, 436640), (610, 349312), (640, 332938), (976, 218320), (1220, 174656), (1280, 166469), (1952, 109160), (2440, 87328), (2729, 78080), (3904, 54580), (4880, 43664), (5458, 39040), (7808, 27290), (9760, 21832), (10916, 19520), (13645, 15616)]