21011055

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18179985

約数列:

[1, 3, 5, 13, 15, 19, 39, 53, 57, 65, 95, 107, 159, 195, 247, 265, 285, 321, 535, 689, 741, 795, 1007, 1235, 1391, 1605, 2033, 2067, 3021, 3445, 3705, 4173, 5035, 5671, 6099, 6955, 10165, 10335, 13091, 15105, 17013, 20865, 26429, 28355, 30495, 39273, 65455, 73723, 79287, 85065, 107749, 132145, 196365, 221169, 323247, 368615, 396435, 538745, 1105845, 1400737, 1616235, 4202211, 7003685, 21011055]

約数ペア:

[(1, 21011055), (3, 7003685), (5, 4202211), (13, 1616235), (15, 1400737), (19, 1105845), (39, 538745), (53, 396435), (57, 368615), (65, 323247), (95, 221169), (107, 196365), (159, 132145), (195, 107749), (247, 85065), (265, 79287), (285, 73723), (321, 65455), (535, 39273), (689, 30495), (741, 28355), (795, 26429), (1007, 20865), (1235, 17013), (1391, 15105), (1605, 13091), (2033, 10335), (2067, 10165), (3021, 6955), (3445, 6099), (3705, 5671), (4173, 5035)]