21736456

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{659}}^1$

素因数の和:722

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 28951544

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 31, 38, 56, 62, 76, 124, 133, 152, 217, 248, 266, 434, 532, 589, 659, 868, 1064, 1178, 1318, 1736, 2356, 2636, 4123, 4613, 4712, 5272, 8246, 9226, 12521, 16492, 18452, 20429, 25042, 32984, 36904, 40858, 50084, 81716, 87647, 100168, 143003, 163432, 175294, 286006, 350588, 388151, 572012, 701176, 776302, 1144024, 1552604, 2717057, 3105208, 5434114, 10868228, 21736456]

約数ペア:

[(1, 21736456), (2, 10868228), (4, 5434114), (7, 3105208), (8, 2717057), (14, 1552604), (19, 1144024), (28, 776302), (31, 701176), (38, 572012), (56, 388151), (62, 350588), (76, 286006), (124, 175294), (133, 163432), (152, 143003), (217, 100168), (248, 87647), (266, 81716), (434, 50084), (532, 40858), (589, 36904), (659, 32984), (868, 25042), (1064, 20429), (1178, 18452), (1318, 16492), (1736, 12521), (2356, 9226), (2636, 8246), (4123, 5272), (4613, 4712)]