21148204

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{577}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 49814352

約数和(自身を除く): 28666148

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 49, 68, 77, 98, 119, 154, 187, 196, 238, 308, 374, 476, 539, 577, 748, 833, 1078, 1154, 1309, 1666, 2156, 2308, 2618, 3332, 4039, 5236, 6347, 8078, 9163, 9809, 12694, 16156, 18326, 19618, 25388, 28273, 36652, 39236, 44429, 56546, 68663, 88858, 107899, 113092, 137326, 177716, 215798, 274652, 311003, 431596, 480641, 622006, 755293, 961282, 1244012, 1510586, 1922564, 3021172, 5287051, 10574102, 21148204]

約数ペア:

[(1, 21148204), (2, 10574102), (4, 5287051), (7, 3021172), (11, 1922564), (14, 1510586), (17, 1244012), (22, 961282), (28, 755293), (34, 622006), (44, 480641), (49, 431596), (68, 311003), (77, 274652), (98, 215798), (119, 177716), (154, 137326), (187, 113092), (196, 107899), (238, 88858), (308, 68663), (374, 56546), (476, 44429), (539, 39236), (577, 36652), (748, 28273), (833, 25388), (1078, 19618), (1154, 18326), (1309, 16156), (1666, 12694), (2156, 9809), (2308, 9163), (2618, 8078), (3332, 6347), (4039, 5236)]