20941952

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 64

約数和(自身を含む): 44880000

約数和(自身を除く): 23938048

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 79, 109, 128, 152, 158, 218, 304, 316, 436, 608, 632, 872, 1216, 1264, 1501, 1744, 2071, 2432, 2528, 3002, 3488, 4142, 5056, 6004, 6976, 8284, 8611, 10112, 12008, 13952, 16568, 17222, 24016, 33136, 34444, 48032, 66272, 68888, 96064, 132544, 137776, 163609, 192128, 265088, 275552, 327218, 551104, 654436, 1102208, 1308872, 2617744, 5235488, 10470976, 20941952]

約数ペア:

[(1, 20941952), (2, 10470976), (4, 5235488), (8, 2617744), (16, 1308872), (19, 1102208), (32, 654436), (38, 551104), (64, 327218), (76, 275552), (79, 265088), (109, 192128), (128, 163609), (152, 137776), (158, 132544), (218, 96064), (304, 68888), (316, 66272), (436, 48032), (608, 34444), (632, 33136), (872, 24016), (1216, 17222), (1264, 16568), (1501, 13952), (1744, 12008), (2071, 10112), (2432, 8611), (2528, 8284), (3002, 6976), (3488, 6004), (4142, 5056)]