21068036

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:153

約数の個数: 72

約数和(自身を含む): 44688000

約数和(自身を除く): 23619964

約数列:

[1, 2, 4, 11, 19, 22, 29, 38, 44, 58, 76, 79, 116, 121, 158, 209, 242, 316, 319, 418, 484, 551, 638, 836, 869, 1102, 1276, 1501, 1738, 2204, 2291, 2299, 3002, 3476, 3509, 4582, 4598, 6004, 6061, 7018, 9164, 9196, 9559, 12122, 14036, 16511, 19118, 24244, 25201, 33022, 38236, 43529, 50402, 66044, 66671, 87058, 100804, 133342, 174116, 181621, 266684, 277211, 363242, 478819, 554422, 726484, 957638, 1108844, 1915276, 5267009, 10534018, 21068036]

約数ペア:

[(1, 21068036), (2, 10534018), (4, 5267009), (11, 1915276), (19, 1108844), (22, 957638), (29, 726484), (38, 554422), (44, 478819), (58, 363242), (76, 277211), (79, 266684), (116, 181621), (121, 174116), (158, 133342), (209, 100804), (242, 87058), (316, 66671), (319, 66044), (418, 50402), (484, 43529), (551, 38236), (638, 33022), (836, 25201), (869, 24244), (1102, 19118), (1276, 16511), (1501, 14036), (1738, 12122), (2204, 9559), (2291, 9196), (2299, 9164), (3002, 7018), (3476, 6061), (3509, 6004), (4582, 4598)]