21166740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 74535552

約数和(自身を除く): 53368812

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 107, 126, 140, 157, 180, 210, 214, 252, 314, 315, 321, 420, 428, 471, 535, 628, 630, 642, 749, 785, 942, 963, 1070, 1099, 1260, 1284, 1413, 1498, 1570, 1605, 1884, 1926, 2140, 2198, 2247, 2355, 2826, 2996, 3140, 3210, 3297, 3745, 3852, 4396, 4494, 4710, 4815, 5495, 5652, 6420, 6594, 6741, 7065, 7490, 8988, 9420, 9630, 9891, 10990, 11235, 13188, 13482, 14130, 14980, 16485, 16799, 19260, 19782, 21980, 22470, 26964, 28260, 32970, 33598, 33705, 39564, 44940, 49455, 50397, 65940, 67196, 67410, 83995, 98910, 100794, 117593, 134820, 151191, 167990, 197820, 201588, 235186, 251985, 302382, 335980, 352779, 470372, 503970, 587965, 604764, 705558, 755955, 1007940, 1058337, 1175930, 1411116, 1511910, 1763895, 2116674, 2351860, 3023820, 3527790, 4233348, 5291685, 7055580, 10583370, 21166740]

約数ペア:

[(1, 21166740), (2, 10583370), (3, 7055580), (4, 5291685), (5, 4233348), (6, 3527790), (7, 3023820), (9, 2351860), (10, 2116674), (12, 1763895), (14, 1511910), (15, 1411116), (18, 1175930), (20, 1058337), (21, 1007940), (28, 755955), (30, 705558), (35, 604764), (36, 587965), (42, 503970), (45, 470372), (60, 352779), (63, 335980), (70, 302382), (84, 251985), (90, 235186), (105, 201588), (107, 197820), (126, 167990), (140, 151191), (157, 134820), (180, 117593), (210, 100794), (214, 98910), (252, 83995), (314, 67410), (315, 67196), (321, 65940), (420, 50397), (428, 49455), (471, 44940), (535, 39564), (628, 33705), (630, 33598), (642, 32970), (749, 28260), (785, 26964), (942, 22470), (963, 21980), (1070, 19782), (1099, 19260), (1260, 16799), (1284, 16485), (1413, 14980), (1498, 14130), (1570, 13482), (1605, 13188), (1884, 11235), (1926, 10990), (2140, 9891), (2198, 9630), (2247, 9420), (2355, 8988), (2826, 7490), (2996, 7065), (3140, 6741), (3210, 6594), (3297, 6420), (3745, 5652), (3852, 5495), (4396, 4815), (4494, 4710)]