21974988

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1997}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 59076864

約数和(自身を除く): 37101876

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 131, 262, 393, 524, 786, 917, 1572, 1834, 1997, 2751, 3668, 3994, 5502, 5991, 7988, 11004, 11982, 13979, 23964, 27958, 41937, 55916, 83874, 167748, 261607, 523214, 784821, 1046428, 1569642, 1831249, 3139284, 3662498, 5493747, 7324996, 10987494, 21974988]

約数ペア:

[(1, 21974988), (2, 10987494), (3, 7324996), (4, 5493747), (6, 3662498), (7, 3139284), (12, 1831249), (14, 1569642), (21, 1046428), (28, 784821), (42, 523214), (84, 261607), (131, 167748), (262, 83874), (393, 55916), (524, 41937), (786, 27958), (917, 23964), (1572, 13979), (1834, 11982), (1997, 11004), (2751, 7988), (3668, 5991), (3994, 5502)]