21207173757

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{829}}^1\times {\mathrm{1877}}^1$

素因数の和:2786

約数の個数: 64

約数和(自身を含む): 35913369600

約数和(自身を除く): 14706195843

約数列:

[1, 3, 7, 11, 21, 33, 59, 77, 177, 231, 413, 649, 829, 1239, 1877, 1947, 2487, 4543, 5631, 5803, 9119, 13139, 13629, 17409, 20647, 27357, 39417, 48911, 61941, 63833, 110743, 144529, 146733, 191499, 332229, 342377, 433587, 538021, 775201, 1027131, 1218173, 1556033, 1614063, 2325603, 3654519, 3766147, 4668099, 8527211, 10892231, 11298441, 17116363, 25581633, 32676693, 51349089, 91805947, 119814541, 275417841, 359443623, 642641629, 1009865417, 1927924887, 3029596251, 7069057919, 21207173757]

約数ペア:

[(1, 21207173757), (3, 7069057919), (7, 3029596251), (11, 1927924887), (21, 1009865417), (33, 642641629), (59, 359443623), (77, 275417841), (177, 119814541), (231, 91805947), (413, 51349089), (649, 32676693), (829, 25581633), (1239, 17116363), (1877, 11298441), (1947, 10892231), (2487, 8527211), (4543, 4668099), (5631, 3766147), (5803, 3654519), (9119, 2325603), (13139, 1614063), (13629, 1556033), (17409, 1218173), (20647, 1027131), (27357, 775201), (39417, 538021), (48911, 433587), (61941, 342377), (63833, 332229), (110743, 191499), (144529, 146733)]