21320204

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 19806196

約数列:

[1, 2, 4, 19, 38, 53, 67, 76, 79, 106, 134, 158, 212, 268, 316, 1007, 1273, 1501, 2014, 2546, 3002, 3551, 4028, 4187, 5092, 5293, 6004, 7102, 8374, 10586, 14204, 16748, 21172, 67469, 79553, 100567, 134938, 159106, 201134, 269876, 280529, 318212, 402268, 561058, 1122116, 5330051, 10660102, 21320204]

約数ペア:

[(1, 21320204), (2, 10660102), (4, 5330051), (19, 1122116), (38, 561058), (53, 402268), (67, 318212), (76, 280529), (79, 269876), (106, 201134), (134, 159106), (158, 134938), (212, 100567), (268, 79553), (316, 67469), (1007, 21172), (1273, 16748), (1501, 14204), (2014, 10586), (2546, 8374), (3002, 7102), (3551, 6004), (4028, 5293), (4187, 5092)]