20119040

素因数分解:

$2^9\times 5^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:323

約数の個数: 80

約数和(自身を含む): 50086080

約数和(自身を除く): 29967040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 128, 145, 160, 232, 256, 271, 290, 320, 464, 512, 542, 580, 640, 928, 1084, 1160, 1280, 1355, 1856, 2168, 2320, 2560, 2710, 3712, 4336, 4640, 5420, 7424, 7859, 8672, 9280, 10840, 14848, 15718, 17344, 18560, 21680, 31436, 34688, 37120, 39295, 43360, 62872, 69376, 74240, 78590, 86720, 125744, 138752, 157180, 173440, 251488, 314360, 346880, 502976, 628720, 693760, 1005952, 1257440, 2011904, 2514880, 4023808, 5029760, 10059520, 20119040]

約数ペア:

[(1, 20119040), (2, 10059520), (4, 5029760), (5, 4023808), (8, 2514880), (10, 2011904), (16, 1257440), (20, 1005952), (29, 693760), (32, 628720), (40, 502976), (58, 346880), (64, 314360), (80, 251488), (116, 173440), (128, 157180), (145, 138752), (160, 125744), (232, 86720), (256, 78590), (271, 74240), (290, 69376), (320, 62872), (464, 43360), (512, 39295), (542, 37120), (580, 34688), (640, 31436), (928, 21680), (1084, 18560), (1160, 17344), (1280, 15718), (1355, 14848), (1856, 10840), (2168, 9280), (2320, 8672), (2560, 7859), (2710, 7424), (3712, 5420), (4336, 4640)]